html {
    font-family: PostNoBillsJaffna-SemiBold;
    font-size: 18px;
    color: white;
    scroll-behavior: smooth;
}

html, body {
    padding: 0;
    margin: 0;
}

body {
    background-color: #353535;
}

.center {
    max-width: 1080px;
    margin: auto;
}

.block-gray {
    background-color: #504F4F;
}

.block-light-gray {
    background-color: #676565;
}

.block-gray, .block-light-gray {
    padding: 50px 50px;
    border: 1px solid black;
}

header {
    position: fixed;
    background-color: #2C2C2C;
    width: 100%;
    height: 120px;
    border: 1px solid black;
    z-index: 100;
}

a.navigation {
    text-decoration: none;
    color: white;
}

a.navigation:hover {
    animation: pulse 2s linear infinite;
    color: rgb(209, 209, 209);
}

a.navigation:active {
    animation: little-pulse 1s linear infinite;
    color: rgb(209, 209, 209);
}

a.project {
    text-decoration: none;
    color: white;
}

a.project:hover {
    animation: project-pulse 1s linear infinite;
}

#about, #my-skills, #courses, #contacts, #projects {
    padding-top: 100px;
    margin-top: -100px;
}

nav {
    padding: 0px 30px;
}

nav ul {
    padding-left: 0px;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

nav ul .main-li {
    font-size: 54px;
}

nav ul li {
    display: inline-block;
    text-align: center;
    font-size: 36px;
    line-height: 40px;
}

main {
    padding-top: 120px;
}

h1, h2 {
    padding: 0;
    margin: 0;
}

h1 {
    font-size: 78px;
    padding-top: 30px;
}

h2 {
    font-size: 64px;
}

img {
    float: right;
}

.main-block {
    height: 300px;
}

.my-name h2 {
    padding-top: 20px;
}

.my-name {
    padding: 0;
    margin: 0;
    display: inline-block;
    align-items: center;
}

section {
    padding: 0;
    margin: 0;
}

.about-me {
    font-size: 24px;
}

.my-skills {
    font-size: 24px;
    display: flex;
    flex-wrap: wrap;
}

.my-skills ul{
    padding-left: 0;
    list-style: none;
}

.flex-block {
    width: 50%;
}

.code-skills {
    width: 40%;
}

code {
    padding-top: 20px;
    font-size: 18px;
    background-color: rgba(66, 66, 66, 0.6);
    height: 180px;
    margin-left: -20px;
    padding: 15px;
    color: rgb(163, 163, 163);
}

.courses {
    display: flex;
    justify-content: space-around;
    font-size: 24px;
    flex-wrap: wrap;
    height: 500px;
}

.courses ul {
    padding: 0;
    margin: 0;
    list-style: none;
    text-align: right;
    width: 70%;
}

.courses h2 {
    width: 30%;
}

.all-certificates {
    width: 100%;
    height: 360px;
    display: flex;
    justify-content: center;
}

.certificate {
    width: 300px;
    height: 360px;
    margin: 10px 10px;
    background-repeat: no-repeat;
    background-size: contain;
}

.certificate-ITEA {
    background-image: url(../certificates/ITEA.png);
}

.certificate-RSS0 {
    background-image: url(../certificates/RSS0.png);
    background-position: center;
}

.projects {
    display: flex;
    justify-content: center;
    flex-direction: column;
}

.projects h2 {
    text-align: center;
}

.all-projects {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
}

.project-link {
    width: 460px;
    height: 320px;
    margin-top: 20px;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    border-radius: 10px;
    position: relative;
    z-index: 1;
}

.project-link a {
    text-decoration: none;
    font-size: 36px;
    color: rgb(0, 0, 0);
}

.projects-link-name {
    width: 100%;
    height: 100%;
    border-radius: 10px;
    opacity: 0;
    background-color: rgba(201, 201, 201, 0.75);
    transition: .3s;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.projects-link-name:hover {
    opacity: 1;
}

.tic-tac-toe {
    background-image: url(../images/projects/tic-tac-toe.PNG);
}

.random-jokes {
    background-image: url(../images/projects/random-jokes.PNG);
}

.music-player {
    background-image: url(../images/projects/music-player.PNG);
}

.portfolio-rss {
    background-image: url(../images/projects/portfolio.PNG);
}

.project-name {
    width: 80%;
}

.about-project {
    width: 80%;
    padding: 0;
    margin: 10px 0 0;
    font-size: 20px;
}

.contact-languages {
    font-size: 28px;
    display: flex;
    flex-wrap: wrap;
}

.contact-languages ul {
    padding: 0;
    margin: 0;
    list-style: none;
}

.contact-languages ul li {
    padding-top: 10px;
}

footer {
    background-color: #2C2C2C;
    border: 1px solid black;
    max-width: 100%;
    height: 120px;
    padding-top: 10px;
}

.footer-items {
    display: flex;
    align-items: center;
    justify-content: space-around;
}

.footer-items p {
    text-align: center;
    font-size: 24px;
}