Economic-Machine/style.less at master · ndajiya/Economic-Machine · GitHub

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#app {
  font-family: Avenir, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  margin-top: 60px;
}

.button {
  position: relative;
  display: inline-block;
  padding: 15px 20px;
  border-radius: 4px;
  color: #03e9f4;
  text-decoration: none;
  text-transform: uppercase;
  font-size: 15px;
  overflow: hidden;
  margin: 25px;
  font-family: "Roboto", sans-serif;
  filter: hue-rotate(0deg);
  border: 2px solid #d2bdff;
  transition: all 0.1s linear;

  &:hover {
    border: 1px solid transparent;
    span {
      position: absolute;
      display: block;

      &:nth-child(1) {
        filter: hue-rotate(0deg);
        top: 0;
        left: 0;
        width: 100%;
        height: 3px;
        background: linear-gradient(90deg, transparent, #3a86ff);
        animation: animate1 1s linear infinite;
      }
      @keyframes animate1 {
        0% {
          left: -100%;
        }
        50%,
        100% {
          left: 100%;
        }
      }

      &:nth-child(2) {
        filter: hue-rotate(60deg);
        top: -100%;
        right: 0;
        width: 3px;
        height: 100%;
        background: linear-gradient(180deg, transparent, #3a86ff);
        animation: animate2 1s linear infinite;
        animation-delay: 0.25s;
      }

      @keyframes animate2 {
        0% {
          top: -100%;
        }
        50%,
        100% {
          top: 100%;
        }
      }
      &:nth-child(3) {
        filter: hue-rotate(120deg);
        bottom: 0;
        right: 0;
        width: 100%;

        background: linear-gradient(270deg, transparent, #3a86ff);
        animation: animate3 1s linear infinite;
        animation-delay: 0.5s;
      }
      @keyframes animate3 {
        0% {
          right: -100%;
          height: 3px;
        }
        50%,
        100% {
          height: 2px;
          right: 100%;
        }
      }

      &:nth-child(4) {
        filter: hue-rotate(300deg);
        bottom: -100%;
        left: 0;
        width: 3px;
        height: 100%;
        background: linear-gradient(360deg, transparent, #3a86ff);
        animation: animate4 1s linear infinite;
        animation-delay: 0.75s;
      }
      @keyframes animate4 {
        0% {
          bottom: -100%;
        }
        50%,
        100% {
          bottom: 100%;
        }
      }
    }
  }
}