main.css

@import url("https://fonts.googleapis.com/css2?family=Mulish:wght@400;500;700&display=swap");
* {
  padding: 0;
  margin: 0;
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
  font-family: "Mulish", sans-serif;
  -webkit-transition: all 0.5s ease;
  transition: all 0.5s ease;
  color: var(--font-color);
}

a {
  text-decoration: none;
}

html,
body {
  --bg-color: whitesmoke;
  --font-color: black;
  --border-color: lightgray;
  height: 100%;
  overflow: hidden;
  width: 100%;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  background-color: var(--bg-color);
  scroll-behavior: smooth;
  -ms-scroll-snap-type: y mandatory;
      scroll-snap-type: y mandatory;
}

body.dark {
  --bg-color: black !important;
  --font-color: whitesmoke !important;
  --border-color: darkslategray !important;
}

body.dark #contact img,
body.dark nav img {
  -webkit-filter: invert(1);
          filter: invert(1);
}

.links span {
  padding-left: 10px;
}

nav {
  height: 100%;
  width: 15%;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-align: stretch;
      -ms-flex-align: stretch;
          align-items: stretch;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  position: fixed;
}

nav #button {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  position: fixed;
  height: 50px;
  width: -webkit-max-content;
  width: -moz-max-content;
  width: max-content;
  font-size: 22px;
  top: 2%;
  left: 2%;
  border: 1px solid var(--border-color);
  border-radius: 50px;
  padding: 10px;
  -webkit-user-select: none;
     -moz-user-select: none;
      -ms-user-select: none;
          user-select: none;
}

nav #button img {
  margin-left: 2px;
  height: 25px;
  width: 25px;
}

nav #button div {
  text-align: right;
  font-size: medium;
  opacity: 0;
  -webkit-transition: opacity 0.5s ease-in-out margin-left 0.5s ease-in-out;
  transition: opacity 0.5s ease-in-out margin-left 0.5s ease-in-out;
  margin-left: -110px;
  word-wrap: normal;
}

nav #button:hover {
  -webkit-box-shadow: 5px 5px 5px var(--border-color);
          box-shadow: 5px 5px 5px var(--border-color);
}

nav .links {
  position: relative;
}

nav .links div {
  padding: 20px;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  border: 1px solid var(--border-color);
  -webkit-box-shadow: 5px 5px 5px var(--border-color);
          box-shadow: 5px 5px 5px var(--border-color);
}

nav .links a {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  border: 1px solid transparent;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  padding: 20px;
  cursor: pointer;
}

#screens {
  display: block;
  height: 100%;
  padding-left: 15%;
  -webkit-box-flex: 1;
      -ms-flex: 1;
          flex: 1;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-align: stretch;
      -ms-flex-align: stretch;
          align-items: stretch;
}

#screens > div {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  scroll-snap-align: center;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  height: 100%;
  -webkit-box-align: end;
      -ms-flex-align: end;
          align-items: flex-end;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  padding-right: 50px;
}

#screens > div#home img {
  height: 150px;
  margin-bottom: 20px;
  border-radius: 50%;
}

#screens > div#projects {
  -webkit-box-orient: horizontal;
  -webkit-box-direction: normal;
      -ms-flex-direction: row;
          flex-direction: row;
  -ms-flex-pack: distribute;
      justify-content: space-around;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
}

#screens > div#projects .lang-logos {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
}

#screens > div#projects .lang-logos img {
  margin: 25px;
}

#screens > div#projects .project-list {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  width: 25%;
  overflow-y: hidden;
  -ms-scroll-snap-type: x mandatory;
      scroll-snap-type: x mandatory;
  height: 500px;
  scrollbar-width: thin;
  scrollbar-color: var(--border-color) transparent;
}

#screens > div#projects .project-list::-webkit-scrollbar {
  height: 5px;
  background-color: transparent;
}

#screens > div#projects .project-list::-webkit-scrollbar-thumb {
  border-radius: 10px;
  background-color: var(--border-color);
}

#screens > div#projects .project {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  scroll-snap-align: center;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  -webkit-box-flex: 1;
      -ms-flex: 1;
          flex: 1;
  min-width: 95%;
  height: 45%;
  max-height: 45%;
  border: 1px solid var(--border-color);
  margin: 10px 20px 10px 5px;
  padding: 10px;
  border-radius: 5px;
}

#screens > div#projects .project div {
  margin: 5px;
}

#screens > div#projects .project .details {
  -webkit-box-flex: 1;
      -ms-flex: 1;
          flex: 1;
}

#screens > div#projects .project .title {
  font-weight: bolder;
}

#screens > div#projects .project .links {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  margin: 30px auto 20px;
}

#screens > div#projects .project .link {
  border: 1px solid var(--border-color);
  position: relative;
  border-radius: 5px;
  margin: 0 5px;
  overflow: hidden;
  cursor: pointer;
  -webkit-user-select: none;
     -moz-user-select: none;
      -ms-user-select: none;
          user-select: none;
}

#screens > div#projects .project .link a {
  display: block;
  padding: 10px;
}

#screens > div#projects .project .link .ripple {
  position: absolute;
  background-color: var(--border-color);
  opacity: 0.5;
  height: 250px;
  width: 250px;
  border-radius: 50%;
  pointer-events: none;
  border: 1px solid var(--border-color);
  -webkit-animation: ripple 1.5s;
          animation: ripple 1.5s;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
}

#screens > div#contact {
  -webkit-box-orient: horizontal;
  -webkit-box-direction: normal;
      -ms-flex-direction: row;
          flex-direction: row;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
}

#screens > div#contact a {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  margin: 10px;
  padding: 10px;
  border: 1px solid transparent;
  border-radius: 5px;
}

#screens > div#contact a img {
  height: 75px;
  width: 75px;
}

#screens > div#contact a:hover {
  border-color: var(--border-color);
  -webkit-box-shadow: 5px 5px 5px var(--border-color);
          box-shadow: 5px 5px 5px var(--border-color);
}

@-webkit-keyframes ripple {
  0% {
    height: 0;
    width: 0;
    opacity: 1;
  }
  80% {
    height: 250px;
    width: 250px;
  }
  100% {
    opacity: 0;
  }
}

@keyframes ripple {
  0% {
    height: 0;
    width: 0;
    opacity: 1;
  }
  80% {
    height: 250px;
    width: 250px;
  }
  100% {
    opacity: 0;
  }
}

@media (max-width: 768px) {
  * {
    font-size: 15px;
  }
  nav {
    width: 20%;
  }
  nav #button {
    -webkit-transform: scale(0.75);
            transform: scale(0.75);
    left: 3%;
  }
  nav #button div {
    margin-left: -124px;
    font-size: large;
  }
  nav span {
    display: none;
  }
  #screens {
    padding-left: 20%;
  }
  #screens > div {
    padding-right: 5% !important;
    -webkit-box-align: end;
        -ms-flex-align: end;
            align-items: flex-end;
  }
  #screens > div#home img {
    height: 10%;
  }
  #projects {
    -webkit-box-orient: vertical !important;
    -webkit-box-direction: normal !important;
        -ms-flex-direction: column !important;
            flex-direction: column !important;
    -webkit-box-pack: space-evenly !important;
        -ms-flex-pack: space-evenly !important;
            justify-content: space-evenly !important;
  }
  #projects .lang-logos {
    width: 250px;
    overflow: hidden;
  }
  #projects .lang-logos .img {
    height: 75px;
    position: relative;
    left: 0;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: horizontal !important;
    -webkit-box-direction: normal !important;
        -ms-flex-direction: row !important;
            flex-direction: row !important;
    -webkit-animation: slider 7s ease-in-out infinite;
            animation: slider 7s ease-in-out infinite;
  }
  #projects .lang-logos .img img {
    height: 100%;
    margin: 0 90px !important;
  }
  #projects .project-list {
    width: 90% !important;
    height: 300px;
  }
  #projects .project {
    margin-right: 0;
  }
  @-webkit-keyframes slider {
    10%,
    20%,
    100% {
      left: 0%;
    }
    25%,
    45% {
      left: -131%;
    }
    50%,
    70% {
      left: -261%;
    }
    75%,
    95% {
      left: -362.5%;
    }
  }
  @keyframes slider {
    10%,
    20%,
    100% {
      left: 0%;
    }
    25%,
    45% {
      left: -131%;
    }
    50%,
    70% {
      left: -261%;
    }
    75%,
    95% {
      left: -362.5%;
    }
  }
  #contact {
    -webkit-box-orient: vertical !important;
    -webkit-box-direction: normal !important;
        -ms-flex-direction: column !important;
            flex-direction: column !important;
  }
  #contact img {
    height: 50px !important;
    width: 50px !important;
  }
}