old.xevion.github.io/_scss/partials/_intro.scss

#intro-section {
  .intro-wrapper {
    // background: linear-gradient(45deg, $blueRGBA , $purpleRGBA );
    padding: 0;
    padding-bottom: 20px;
    .intro-body {
      width: 100%;
      height: 101vh;
      overflow: hidden;
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
      @include reveal(reveal-up, 100%);
      @include reveal(reveal-down, -100%);
      @keyframes loading-mask {
        0%,
        100% {
          transform: scaleX(0);
        }
        40%,
        60% {
          transform: scaleX(1);
        }
      }
      .intro-content {
        text-align: center;
        padding: 0 5%;
        width: 100%;
        position: relative;
        top: -5%;
        .heading,
        .heading .name,
        .subtext,
        .btn {
          opacity: 0;
          animation-duration: 0.8s;
          animation-delay: 0.3s;
          animation-fill-mode: forwards;
          .no-cssanimations & {
            opacity: 1;
          }
        }
        .heading {
          font-size: 4.5em;
          font-weight: 700;
          position: relative;
          padding-bottom: 10px;
          color: transparent;
          overflow: hidden;
          opacity: 1;
          @include MQ(M) {
            .name:before {
              top: calc(100% + 18px);
            }
          }
          @include MQ(SM) {
            font-size: 4em;
          }
          &:after {
            content: attr(data-content);
            position: absolute;
            top: 0;
            left: 0;
            height: 100%;
            width: 100%;
            color: $white;
            animation-name: reveal-up;
            animation-fill-mode: backwards;
            animation-duration: 0.4s;
            animation-delay: 0.7s;
          }
          .name {
            position: relative;
            display: inline-block;
            opacity: 1;
            &:before {
              /* this is the line */
              content: '';
              position: absolute;
              top: calc(100% + 8px);
              left: -1em;
              height: 2px;
              width: calc(100% + 2em);
              background-color: $white;
              animation: loading-mask 1s .3s both;
            }
          }
        }
        .action-wrapper {
          overflow: hidden;
          .subtext {
            position: relative;
            margin: 0;
            padding: 0;
            animation-name: reveal-down;
            animation-duration: 0.4s;
            animation-delay: 0.7s;
            .btn {
              display: inline-block;
              padding: 1.2em 0;
              font-size: 1.3rem;
              font-weight: 500;
              line-height: 1.5;
              color: $white;
              text-transform: uppercase;
              font-family: $Gotham, $sans-serif-stack;
              opacity: 1;
              margin: 0;
              @include MQ(SM) {
                font-size: 1.1em;
              }
            }
          }
        }
      }
      .scroll-down-wrapper {
        position: absolute;
        bottom: 50px;
        left: 0;
        right: 0;
        margin: 0 auto;
        text-align: center;
        color: $white;
        .scroll-down {
          display: block;
          width: 70px;
          margin: 0 auto;
          transition: all 0.3s ease;
          &:hover, &:focus {
            transition: all 0.3s ease;
            .logo {
              opacity: 0;
            }
            .scroll-down-text {
              opacity: 1;
              visibility: visible;
            }
          }
          .logo {
            width: 35px;
            transition: opacity 0.5s ease, visibility 0.5s;
          }
          .scroll-down-text {
            color: $white;
            font-family: $Gotham, $sans-serif-stack;
            text-transform: uppercase;
            font-size: 12px;
            font-weight: 700;
            text-align: center;
            height: 100%;
            opacity: 0;
            padding-top: 0.5em;
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            transition: opacity 0.5s ease, visibility 0.5s;
            visibility: hidden;
            width: 100%;
            .chevron {
              transform: rotate(90deg);
              height: 20px;
              display: block;
              margin: 10px auto;
            }
          }
        }
      }
    }
  }
}