@import url('https://fonts.googleapis.com/css2?family=Nunito:ital,wght@0,200..1000;1,200..1000&family=Poppins:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&family=Satisfy&family=Source+Code+Pro:ital,wght@0,200..900;1,200..900&family=Tektur:wght@400..900&display=swap');
/*
    Font: Tektur
    Designed by Adam Jagosz 
    https://fonts.google.com/specimen/Tektur
*/
* {
    margin: 0;
    padding: 0;
    font-family: "Tektur", sans-serif;
    box-sizing: border-box;
    scroll-behavior: smooth;
}
body {
    background: #000;
}
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 40px 100px;
    transition: 0.5s;
    z-index: 1000;
}
header .logo {
    padding: 10px 0px;
    font-size: 1em;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: #88E2FF;
    text-shadow: 0 0 5px #88E2FF;
}
header.sticky {
    background-color: #000;
    border-bottom: 1px solid #88E2FF;
    padding: 20px 100px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}
header ul {
    position: relative;
    display: flex;
    justify-items: center;
    align-items: center;
}
header ul li {
    position: relative;
    list-style: none;
}
header ul li a {
    position: relative;
    display: inline-block;
    margin: 0 20px;
    padding: 5px 10px;
    font-size: 1em;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: #88E2FF;
    text-shadow: 0 0 5px #88E2FF;
    overflow: hidden;
    transition: 0.2s;
}
header ul li a span {
    position: absolute;
    display: block;
}
@keyframes HeaderMenuButtonAnimate1 {
    0% {
        left: -100%;
    }
    50%, 100% {
        left: 100%;
    }
}
@keyframes HeaderMenuButtonAnimate2 {
    0% {
        top: -100%;
    }
    50%, 100% {
        top: 100%;
    }
}
@keyframes HeaderMenuButtonAnimate3 {
    0% {
        right: -100%;
    }
    50%, 100% {
        right: 100%;
    }
}
@keyframes HeaderMenuButtonAnimate4 {
    0% {
        bottom: -100%;
    }
    50%, 100% {
        bottom: 100%;
    }
}
section {
    padding: 100px;
}
.banner {
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    height: 100vh;
    background: #000;
}
.banner .txtBox h2 {
    margin-bottom: 40px;
    font-size: 3em;
    color: #88E2FF;
    text-shadow: 0 0 5px #88E2FF;
    font-weight: 500;
    line-height: 1.5em;
}
.banner .txtBox h2 span {
    font-size: 1.5em;
    font-weight: 700;
}
.banner .txtBox h3 {
    font-size: 2em;
    color: #88E2FF;
    text-shadow: 0 0 5px #88E2FF;
    font-weight: 500;
}
.btn {
    position: relative;
    background: transparent;
    display: inline-block;
    color: #88E2FF;
    text-shadow: 0 0 5px #88E2FF;
    margin-top: 20px;
    padding: 20px 40px;
    font-size: 18px;
    text-transform: uppercase;
    text-decoration: none;
    letter-spacing: 2px;
    font-weight: 500;
    overflow: hidden;
    transition: 0.2s;
}
.btn:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 10px;
    height: 10px;
    border-top: 2px solid #88E2FF;
    border-left: 2px solid #88E2FF;
    transition: 0.2s;
    transition-delay: 0.2s;
}
.btn:after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 10px;
    height: 10px;
    border-bottom: 2px solid #88E2FF;
    border-right: 2px solid #88E2FF;
    transition: 0.2s;
    transition-delay: 0.2s;
}
.banner .worldMap {
    position: absolute;
    right: 10%;
    width: 400px;
    height: 400px;
    box-shadow: inset 0 0 40px #88E2FF,
    0 0 80px #88E2FF;
    border-radius: 50%;
    border: none;
    background: url(images/world_map.png);
    background-size: cover;
    animation: animationEarth 10s linear infinite;
    overflow: hidden;
}
@keyframes animationEarth {
    0% {
        background-position-x: 0px;
    }
    100% {
        background-position-x: 1560px;
    }
}
.heading {
    position: relative;
    width: 100%;
    text-align: center;
    margin-bottom: 30px;
}
.heading h2 {
    font-weight: 600;
    font-size: 1.8em; /*30px*/
    color: #88E2FF;
    text-shadow: 0 0 5px #88E2FF;
    margin-bottom: 10px;
}
.heading p {
    font-weight: 300;
    font-size: 1.6em; /*24px*/
    color: #88E2FF;
    text-shadow: 0 0 5px #88E2FF;
}
.about {
    position: relative;
    background: 
        linear-gradient(to left, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0.0) 0%, rgba(0, 0, 0, 1.0) 50%),
        url("./images/computer_office.jpg");
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
 }
.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #88E2FF;
    z-index: 0;
    mix-blend-mode: color;
}
.about .contentBox {
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.about .contentBox .txtBox {
    max-width: 50%;
    padding-right: 10px;
}
.about .contentBox .txtBox h3 {
    font-size: 1.5em;
    margin-bottom: 10px;
    color: #88E2FF;
    text-shadow: 0 0 5px #88E2FF;
    text-indent: 40px;
}
.about .contentBox .txtBox p {
    color: #88E2FF;
    font-size: 1.2em;
    text-indent: 40px;
    margin-bottom: 1.2em;
}
.about .contentBox .txtBox ul {
    margin-bottom: 1.2em;
    margin-left: 2.4em;
}
.about .contentBox .txtBox ul li {
    color: #88E2FF;
    font-size: 1.2em;
    margin: 10px 0;
}
.about .contentBox .txtBox p span {
    text-shadow: 0 0 5px #88E2FF;
}
.about .contentBox .txtBox ul li span {
    text-shadow: 0 0 5px #88E2FF;
}
.skills {
    position: relative;
    width: 100%;
    height: 100%;
    background: #000;
    overflow: hidden;
}
.skills .circle {
    position: absolute;
    bottom: 0;
    width: 20px;
    aspect-ratio: 1/1;
    background: #88E2FF;
    box-shadow: 0 0 10px #88E2FF,
    0 0 20px #88E2FF,
    0 0 30px #88E2FF,
    0 0 50px #88E2FF;
    border-radius: 50%;
    animation: animateSkillsBackground 5s linear forwards;
    z-index: 0;
}
@keyframes animateSkillsBackground {
    0% {
        transform: translateY(0);
        opacity: 1;
    }
    50% {
        opacity: 1;
    }
    100% {
        bottom: 100%;
        opacity: 0;
    }
}
.skills .circle::before {
    content: '';
    position: absolute;
    top: 100%;
    left: 25%;
    width: 50%;
    height: 100vh;
    opacity: 0.5;
    background: linear-gradient(#88E2FF, transparent);
    z-index: 0;
}
.skills .contentBox {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    flex-wrap: wrap;
    z-index: 1;
}
.skills .contentBox .skillsBox {
    position: relative;
    width: 300px;
    height: 300px;
    margin: 50px;
    border-radius: 15px;
    background: rgba(255, 255, 255, 0.0);
    overflow: hidden;
    display: flex;
    justify-content: center;
    flex-direction: column;
    align-items: center;
    backdrop-filter: blur(5px);
    box-shadow: 0 0 5px #88E2FF;
}
.skills .contentBox .skillsBox .headingBox {
    position: relative;
    text-align: center;
    width: 100%;
    color: #88E2FF;
    transition: 0.5s;
    transform: translateY(40px);
} 
.skills .contentBox .skillsBox .headingBox h3 {
    font-size: 2em;
    text-shadow: 0 0 5px #88E2FF;
}
.skills .contentBox .skillsBox .txtBox {
    padding: 20px;
    text-align: center;
    transform: translateY(50%);
    opacity: 0;
    transition: 0.5s;
}
.skills .contentBox .skillsBox .txtBox p {
    font-size: 1.2em;
    color: #88E2FF;
    font-weight: 300;
}
.skills .contentBox .skillsBox .txtBox p span {
    text-shadow: 0 0 5px #88E2FF;
}
.projects {
    position: relative;
}
.projects .contentBox {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}
.projects .contentBox .projectBox {
    position: relative;
    margin: 50px;
    width: 450px;
    height: 550px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: 0.2s;
}
.projects .contentBox .projectBox span {
    position: absolute;
    display: block;
}
.projects .contentBox .projectBox:nth-child(1) span:nth-child(1) {
    top: 0;
    left: -100%;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, #03e9f4);
    animation: projectBoxAnimate1 1s linear infinite; 
}
.projects .contentBox .projectBox:nth-child(2) span:nth-child(1) {
    top: 0;
    left: -100%;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, #f4da03);
    animation: projectBoxAnimate1 1s linear infinite; 
}
.projects .contentBox .projectBox:nth-child(3) span:nth-child(1) {
    top: 0;
    left: -100%;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, #1df403);
    animation: projectBoxAnimate1 1s linear infinite; 
}
.projects .contentBox .projectBox:nth-child(4) span:nth-child(1) {
    top: 0;
    left: -100%;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, #f4037f);
    animation: projectBoxAnimate1 1s linear infinite; 
}
@keyframes projectBoxAnimate1 {
    0% {
        left: -100%;
    }
    50%, 100% {
        left: 100%;
    }
}
.projects .contentBox .projectBox:nth-child(1) span:nth-child(2) {
    top: -100%;
    right: 0%;
    width: 2px;
    height: 100%;
    background: linear-gradient(180deg, transparent, #03e9f4);
    animation: projectBoxAnimate2 1s linear infinite;
    animation-delay: 0.25s;
}
.projects .contentBox .projectBox:nth-child(2) span:nth-child(2) {
    top: -100%;
    right: 0%;
    width: 2px;
    height: 100%;
    background: linear-gradient(180deg, transparent, #f4da03);
    animation: projectBoxAnimate2 1s linear infinite;
    animation-delay: 0.25s;
}
.projects .contentBox .projectBox:nth-child(3) span:nth-child(2) {
    top: -100%;
    right: 0%;
    width: 2px;
    height: 100%;
    background: linear-gradient(180deg, transparent, #1df403);
    animation: projectBoxAnimate2 1s linear infinite;
    animation-delay: 0.25s;
}
.projects .contentBox .projectBox:nth-child(4) span:nth-child(2) {
    top: -100%;
    right: 0%;
    width: 2px;
    height: 100%;
    background: linear-gradient(180deg, transparent, #f4037f);
    animation: projectBoxAnimate2 1s linear infinite;
    animation-delay: 0.25s;
}
@keyframes projectBoxAnimate2 {
    0% {
        top: -100%;
    }
    50%, 100% {
        top: 100%;
    }
}
.projects .contentBox .projectBox:nth-child(1) span:nth-child(3) {
    bottom: 0%;
    right: -100%;
    width: 100%;
    height: 2px;
    background: linear-gradient(270deg, transparent, #03e9f4);
    animation: projectBoxAnimate3 1s linear infinite;
    animation-delay: 0.5s;
}
.projects .contentBox .projectBox:nth-child(2) span:nth-child(3) {
    bottom: 0%;
    right: -100%;
    width: 100%;
    height: 2px;
    background: linear-gradient(270deg, transparent, #f4da03);
    animation: projectBoxAnimate3 1s linear infinite;
    animation-delay: 0.5s;
}
.projects .contentBox .projectBox:nth-child(3) span:nth-child(3) {
    bottom: 0%;
    right: -100%;
    width: 100%;
    height: 2px;
    background: linear-gradient(270deg, transparent, #1df403);
    animation: projectBoxAnimate3 1s linear infinite;
    animation-delay: 0.5s;
}
.projects .contentBox .projectBox:nth-child(4) span:nth-child(3) {
    bottom: 0%;
    right: -100%;
    width: 100%;
    height: 2px;
    background: linear-gradient(270deg, transparent, #f4037f);
    animation: projectBoxAnimate3 1s linear infinite;
    animation-delay: 0.5s;
}
@keyframes projectBoxAnimate3 {
    0% {
        right: -100%;
    }
    50%, 100% {
        right: 100%;
    }
}
.projects .contentBox .projectBox:nth-child(1) span:nth-child(4) {
    bottom: -100%;
    left: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(360deg, transparent, #03e9f4);
    animation: projectBoxAnimate4 1s linear infinite;
    animation-delay: 0.75s;
}
.projects .contentBox .projectBox:nth-child(2) span:nth-child(4) {
    bottom: -100%;
    left: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(360deg, transparent, #f4da03);
    animation: projectBoxAnimate4 1s linear infinite;
    animation-delay: 0.75s;
}
.projects .contentBox .projectBox:nth-child(3) span:nth-child(4) {
    bottom: -100%;
    left: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(360deg, transparent, #1df403);
    animation: projectBoxAnimate4 1s linear infinite;
    animation-delay: 0.75s;
}
.projects .contentBox .projectBox:nth-child(4) span:nth-child(4) {
    bottom: -100%;
    left: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(360deg, transparent, #f4037f);
    animation: projectBoxAnimate4 1s linear infinite;
    animation-delay: 0.75s;
}
@keyframes projectBoxAnimate4 {
    0% {
        bottom: -100%;
    }
    50%, 100% {
        bottom: 100%;
    }
}
.projects .contentBox .projectBox .headingBox {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    padding: 10px 0;
    transform: translateY(225px);
    transition: 0.5s;
}
.projects .contentBox .projectBox .headingBox h3 {
    font-size: 2.5em;
    padding-top: 5px;
    letter-spacing: 2px;
}
.projects .contentBox .projectBox:nth-child(1) .headingBox h3 {
    color: #03e9f4;
    text-shadow: 0 0 5px #03e9f4;
}
.projects .contentBox .projectBox:nth-child(2) .headingBox h3 {
    color: #f4da03;
    text-shadow: 0 0 5px #f4da03;
}
.projects .contentBox .projectBox:nth-child(3) .headingBox h3 {
    color: #1df403;
    text-shadow: 0 0 5px #1df403;
}
.projects .contentBox .projectBox:nth-child(4) .headingBox h3 {
    color: #f4037f;
    text-shadow: 0 0 5px #f4037f;
}
.projects .contentBox .projectBox .txtBox {
    position: relative;
    width: 100%;
    height: 100%;;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    flex-direction: column;
    text-align: center;
    transform: translateY(450px);
    opacity: 0;
    transition: 0.5s;
}
.projects .contentBox .projectBox .txtBox h4 {
    text-align: center;
    font-size: 1.5em;
    padding: 5px;
    letter-spacing: 2px;
}
.projects .contentBox .projectBox:nth-child(1) .txtBox h4 {
    color: #03e9f4;
    text-shadow: 0 0 5px #03e9f4;
}
.projects .contentBox .projectBox:nth-child(2) .txtBox h4 {
    color: #f4da03;
    text-shadow: 0 0 5px #f4da03;
}
.projects .contentBox .projectBox:nth-child(3) .txtBox h4 {
    color: #1df403;
    text-shadow: 0 0 5px #1df403;
}
.projects .contentBox .projectBox:nth-child(4) .txtBox h4 {
    color: #f4037f;
    text-shadow: 0 0 5px #f4037f;
}
.projects .contentBox .projectBox .txtBox p {
    font-size: 1.2em;
    letter-spacing: 2px;
    padding: 0 10px;
    margin-bottom: 1em;
}
.projects .contentBox .projectBox:nth-child(1) .txtBox p {
    color: #03e9f4;
}
.projects .contentBox .projectBox:nth-child(2) .txtBox p {
    color: #f4da03;
}
.projects .contentBox .projectBox:nth-child(3) .txtBox p {
    color: #1df403;
}
.projects .contentBox .projectBox:nth-child(4) .txtBox p {
    color: #f4037f;
}
.projects .contentBox .projectBox .txtBox p a {
    font-size: 1em;
    letter-spacing: 2px;
    text-decoration: none;
}
.projects .contentBox .projectBox:nth-child(1) .txtBox p a {
    color: #03e9f4;
}
.projects .contentBox .projectBox:nth-child(2) .txtBox p a {
    color: #f4da03;
}
.projects .contentBox .projectBox:nth-child(3) .txtBox p a {
    color: #1df403;
}
.projects .contentBox .projectBox:nth-child(4) .txtBox p a {
    color: #f4037f;
}
.projects .contentBox .projectBox .txtBox a {
    position: relative;
    display: inline-block;
    text-decoration: none;
    font-size: 1.2em;
    letter-spacing: 2px;
    margin-top: auto;
    margin-bottom: 20px;
}
.projects .contentBox .projectBox:nth-child(1) .txtBox a {
    color: #03e9f4;
}
.projects .contentBox .projectBox:nth-child(2) .txtBox a {
    color: #f4da03;
}
.projects .contentBox .projectBox:nth-child(3) .txtBox a {
    color: #1df403;
}
.projects .contentBox .projectBox:nth-child(4) .txtBox a {
    color: #f4037f;
}
.contact {
    position: relative;
    width: 100%;
    height: 100%;
    padding: 100px;
    background: linear-gradient(to left, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0.0) 0%, rgba(0, 0, 0, 1.0) 50%), url("./images/Gyeongju.jpg");
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
    overflow: hidden;
}
.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #88E2FF;
    z-index: 0;
    mix-blend-mode: color;
}
.contact .contentBox {
    position: relative;
    display: flex;
}
.contact .contentBox .info {
    position: relative;
    display: flex;
    justify-content: center;
    flex-direction: column;
    z-index: 1;
}
.contact .contentBox .info .infoBox {
    position: relative;
    padding: 20px 0;
}
.contact .contentBox .info .infoBox .txtBox {
    display: flex;
    justify-content: center;
    flex-direction: column;
}
.contact .contentBox .info .infoBox .txtBox h3 {
    color: #88E2FF;
    font-weight: 500;
    margin-bottom: 5px;
    font-size: 1.5em;
    letter-spacing: 2px;
    text-shadow: 0 0 5px #88E2FF;
}
.contact .contentBox .info .infoBox .txtBox a {
    color: #88E2FF;
    text-decoration: none;
    font-size: 1.1em;
    font-weight: 300;
}
.contact .contentBox .info .infoBox .txtBox p {
    color: #88E2FF;
    text-decoration: none;
    font-size: 1.1em;
    font-weight: 300;
}
.copyright {
    background: #000;
    color: #88E2FF;
    text-align: center;
    padding: 10px;
    font-size: 1.2em;
    text-shadow: 0 0 5px #88E2FF;
}
@media (hover:hover) and (pointer:fine) {
    header ul li a:hover span:nth-child(1) {
        top: 0;
        left: -100%;
        width: 100%;
        height: 2px;
        background: linear-gradient(90deg, transparent, #88E2FF);
        animation: HeaderMenuButtonAnimate1 1s linear infinite; 
    }
    header ul li a:hover span:nth-child(2) {
        top: -100%;
        right: 0%;
        width: 2px;
        height: 100%;
        background: linear-gradient(180deg, transparent, #88E2FF);
        animation: HeaderMenuButtonAnimate2 1s linear infinite;
        animation-delay: 0.25s;
    }
    header ul li a:hover span:nth-child(3) {
        bottom: 0%;
        right: -100%;
        width: 100%;
        height: 2px;
        background: linear-gradient(270deg, transparent, #88E2FF);
        animation: HeaderMenuButtonAnimate3 1s linear infinite;
        animation-delay: 0.5s;
    }
    header ul li a:hover span:nth-child(4) {
        bottom: -100%;
        left: 0;
        width: 2px;
        height: 100%;
        background: linear-gradient(360deg, transparent, #88E2FF);
        animation: HeaderMenuButtonAnimate4 1s linear infinite;
        animation-delay: 0.75s;
    }
    .btn:hover {
        background: #88E2FF;
        color: #000;
        box-shadow: 0 0 10px #88E2FF;
        transition-delay: 0.2s;
    }
    .btn:hover:before {
        width: 100%;
        height: 100%;
        transition-delay: 0s;
    }
    .btn:hover::after {
        width: 100%;
        height: 100%;
        transition-delay: 0s;
    }
    .skills .contentBox .skillsBox:hover {
        box-shadow: 0 0 5px #88E2FF,
                    0 0 10px #88E2FF,
                    0 0 15px #88E2FF;
    }
    .skills .contentBox .skillsBox:hover .headingBox {
        transform: translateY(-40%);
    }
    .skills .contentBox .skillsBox:hover .txtBox {
        transform: translate(0%);
        opacity: 1;
    }
    .projects .contentBox .projectBox:nth-child(1):hover {
        background: #03e9f4;
        box-shadow: 0 0 5px #03e9f4,
        0 0 25px #03e9f4,
        0 0 50px #03e9f4,
        0 0 200px #03e9f4;
    }
    .projects .contentBox .projectBox:nth-child(2):hover {
        background: #f4da03;
        box-shadow: 0 0 5px #f4da03,
        0 0 25px #f4da03,
        0 0 50px #f4da03,
        0 0 200px #f4da03;
    }
    .projects .contentBox .projectBox:nth-child(3):hover {
        background: #1df403;
        box-shadow: 0 0 5px #1df403,
        0 0 25px #1df403,
        0 0 50px #1df403,
        0 0 200px #1df403;
    }
    .projects .contentBox .projectBox:nth-child(4):hover {
        background: #f4037f;
        box-shadow: 0 0 5px #f4037f,
        0 0 25px #f4037f,
        0 0 50px #f4037f,
        0 0 200px #f4037f;
    }
    .projects .contentBox .projectBox:hover .headingBox {
        transform: translateY(0);
    }
    .projects .contentBox .projectBox:hover .headingBox h3 {
        color: #000;
    }
    .projects .contentBox .projectBox:hover .txtBox {
        transform: translate(0px);
        opacity: 1;
    }
    .projects .contentBox .projectBox:hover .txtBox h4,
    .projects .contentBox .projectBox:hover .txtBox p,
    .projects .contentBox .projectBox:hover .txtBox p a,
    .projects .contentBox .projectBox:hover .txtBox a {
        color: #000;
    }
}


@media (max-width: 1030px) {
    header,
    header.sticky {
        padding: 20px 50px;
        z-index: 1000;
    }
    .menu {
        position: fixed;
        top: 75px;
        left: -100%;
        display: flex;
        justify-content: center;
        flex-direction: column;
        padding: 100px 50px;
        text-align: center;
        width: 100%;
        height: 100%;
        background: #000;
        transition: 0.5s;
        z-index: 999;
        border-top: 1px solid rgba(0, 0, 0, 0.2);
    }
    .menu li {
        top: -75px
    }
    .menu.active {
        left: 0;
    }
    header ul li a {
        color: #88E2FF;
        font-size: 24px;
        margin: 10px;
    }
    .toggle {
        width: 40px;
        height: 40px;
        background: url(images/toggle_futuristic.png);
        background-position: center;
        background-repeat: no-repeat;
        background-size: 30px;
        cursor: pointer;
        text-shadow: 0 0 50px #88E2FF;
    }
    .toggle.active {
        background: url(images/close_futuristic.png);
        background-position: center;
        background-repeat: no-repeat;
        background-size: 30px;
        cursor: pointer;
    }
    section {
        padding: 100px 50px;
    }
    .banner {
        padding: 150px 50px 100px;
    }
    .btn {
        background: #88E2FF;
        color: #000;
        box-shadow: 0 0 10px #88E2FF;
    }
    .btn:before {
        width: 100%;
        height: 100%;
        transition-delay: 0s;
    }
    .btn:after {
        width: 100%;
        height: 100%;
        transition-delay: 0s;
    }
    .about {
        position: relative;
        background: 
            linear-gradient(to left, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0.0) 0%, rgba(0, 0, 0, 1.0) 50%),
            url(images/computer_office.jpg);
        background-size: cover;
        background-position: center;
    }
    .about::after {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.9);
        z-index: 0;
    }
    .about .contentBox .txtBox {
        max-width: 100%;
    }
    .heading {
        z-index: 1;
    }
    .contentBox {
        z-index: 1;
    }
    .skills .contentBox .skillsBox {
        box-shadow: 0 0 5px #88E2FF,
        0 0 10px #88E2FF,
        0 0 15px #88E2FF;
    }
    .skills .contentBox .skillsBox .headingBox {
        position: relative;
        transform: translateY(0);
    } 
    .skills .contentBox .skillsBox .txtBox {
        transform: translateY(0);
        opacity: 1;
    }
    .projects .contentBox .projectBox:nth-child(1) {
        background: #03e9f4;
        box-shadow: 0 0 5px #03e9f4,
        0 0 25px #03e9f4;
    }
    .projects .contentBox .projectBox:nth-child(2){
        background: #f4da03;
        box-shadow: 0 0 5px #f4da03,
        0 0 25px #f4da03;
    }
    .projects .contentBox .projectBox:nth-child(3) {
        background: #1df403;
        box-shadow: 0 0 5px #1df403,
        0 0 25px #1df403;
    }
    .projects .contentBox .projectBox:nth-child(4) {
        background: #f4037f;
        box-shadow: 0 0 5px #f4037f,
        0 0 25px #f4037f;
    }
    .projects .contentBox .projectBox .headingBox {
        transform: translateY(0);
    }
    .projects .contentBox .projectBox:nth-child(1) .headingBox h3 {
        color: #000;
    }
    .projects .contentBox .projectBox:nth-child(2) .headingBox h3 {
        color: #000;
    }
    .projects .contentBox .projectBox:nth-child(3) .headingBox h3 {
        color: #000;
    }
    .projects .contentBox .projectBox:nth-child(4) .headingBox h3 {
        color: #000;
    }
    .projects .contentBox .projectBox .txtBox {
        transform: translate(0px);
        opacity: 1;
    }
    .projects .contentBox .projectBox:nth-child(1) .txtBox h4,
    .projects .contentBox .projectBox:nth-child(1) .txtBox p,
    .projects .contentBox .projectBox:nth-child(1) .txtBox p a,
    .projects .contentBox .projectBox:nth-child(1) .txtBox a {
        color: #000;
    }
    .projects .contentBox .projectBox:nth-child(2) .txtBox h4,
    .projects .contentBox .projectBox:nth-child(2) .txtBox p,
    .projects .contentBox .projectBox:nth-child(2) .txtBox p a,
    .projects .contentBox .projectBox:nth-child(2) .txtBox a {
        color: #000;
    }
    .projects .contentBox .projectBox:nth-child(3) .txtBox h4,
    .projects .contentBox .projectBox:nth-child(3) .txtBox p,
    .projects .contentBox .projectBox:nth-child(3) .txtBox p a,
    .projects .contentBox .projectBox:nth-child(3) .txtBox a {
        color: #000;
    }
    .projects .contentBox .projectBox:nth-child(4) .txtBox h4,
    .projects .contentBox .projectBox:nth-child(4) .txtBox p,
    .projects .contentBox .projectBox:nth-child(4) .txtBox p a,
    .projects .contentBox .projectBox:nth-child(4) .txtBox a {
        color: #000;
    }
    .contact {
        width: 100%;
        height: 100vh;
        position: relative;
        padding: 100px;
        width: 100%;
        height: 100vh;
        background: url("./images/Gyeongju.jpg");
        background-attachment: fixed;
        background-size: cover;
        background-position: center;
        overflow: hidden;
    }
    .contact::after {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.75);
        z-index: 0;
    }
}
@media (max-width: 980px) {
    .banner .txtBox {
        z-index: 1;
    }
    .banner::after {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.8);
        z-index: 0;
    }
}
@media (max-width: 650px) {
    section {
        padding: 100px 20px;
    }
    .banner .txtBox h2 {
        font-size: 2.7em;
    }
    .banner .txtBox h2 span {
        font-size: 1.5em;
    }
    .banner .txtBox h3 {
        font-size: 1.8em;
    }
    .btn {
        padding: 15px 35px;
    }
    .about {
        padding: 100px 50px;
		background: none;
    }
    .contact .contentBox {
        flex-direction: column;
    }

    .skills .contentBox .skillsBox {
        width: 250px;
        height: 250px;
    }
    .skills .contentBox .skillsBox .headingBox h3 {
        font-size: 1.8em;
        text-shadow: 0 0 5px #88E2FF;
    }
}

@media (max-width: 500px) {
    .banner .worldMap {
        width: 400px;
        height: 400px;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
    }
    .projects .contentBox .projectBox .headingBox h3 {
        color: #000;
        font-size: 2em;
        padding: 5px;
        letter-spacing: 2px;
    }
    .projects .contentBox .projectBox .txtBox h4 {
        color: #000;
        text-align: center;
        font-size: 1.3em;
        padding: 10px 0;
        letter-spacing: 2px;
    }
    .projects .contentBox .projectBox .txtBox p {
        color: #000;
        font-size: 1.1em;
        letter-spacing: 2px;
        padding: 0 10px;
    }
    .projects .contentBox .projectBox .txtBox p a {
        color: #000;
        font-size: 1em;
        letter-spacing: 2px;
        padding: 0 10px;
    }
    .projects .contentBox .projectBox .txtBox a {
        position: relative;
        display: inline-block;
        text-decoration: none;
        color: #000;
        font-size: 1.1em;
        letter-spacing: 2px;
        transition: 0.5s;
        margin-top: auto;
        margin-bottom: 20px;;
    }
    .contact .contentBox .info .infoBox .txtBox {
        display: flex;
        justify-content: center;
        align-items: center;
        flex-direction: column;
    }
}
@media (max-width: 400px) {
    section {
        padding: 100px 0px;
    }
    .banner .txtBox h2 {
        font-size: 2.5em;
    }
    .banner .txtBox h2 span {
        font-size: 1.3em;
    }
    .banner .txtBox h3 {
        font-size: 1.5em;
    }
    .btn {
        padding: 15px 35px;
    }
    .banner .worldMap {
        width: 350px;
        height: 350px;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
    }
    .contact .contentBox {
        position: relative;
        display: flex;
        justify-content: center;
    }
    .contact .contentBox .info {
        position: relative;
        display: flex;
        justify-content: center;
        flex-direction: column;
        z-index: 1;
    }
    .contact .contentBox .info .infoBox {
        position: relative;
        padding: 20px 0;
    }
    .contact .contentBox .info .infoBox .txtBox h3 {
        font-size: 1.4em;
    }
    .contact .contentBox .info .infoBox .txtBox a {
        font-size: 1em;
    }
    .contact .contentBox .info .infoBox .txtBox p {
        font-size: 1em;
    }  
}
@media (max-width: 350px) {
    .banner .worldMap {
        width: 300px;
        height: 300px;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
    }
    .skills .contentBox .skillsBox .headingBox h3 {
        font-size: 1.5em;
        text-shadow: 0 0 5px #88E2FF;
    }
    .projects .contentBox .projectBox .headingBox h3 {
        color: #000;
        font-size: 1.6em;
        padding: 5px;
        letter-spacing: 2px;
    }
    .projects .contentBox .projectBox .txtBox h4 {
        color: #000;
        text-align: center;
        font-size: 1.1em;
        padding: 10px 0;
        letter-spacing: 2px;
    }
    .projects .contentBox .projectBox .txtBox p {
        color: #000;
        font-size: 1em;
        letter-spacing: 2px;
        padding: 0 10px;
    }
    .projects .contentBox .projectBox .txtBox p a {
        color: #000;
        font-size: 1em;
        letter-spacing: 2px;
        padding: 0 10px;
    }
    .projects .contentBox .projectBox .txtBox a {
        position: relative;
        display: inline-block;
        text-decoration: none;
        color: #000;
        font-size: 1em;
        letter-spacing: 2px;
        transition: 0.5s;
        margin-top: auto;
        margin-bottom: 20px;;
    } 
}