hummingbird-me/kitsu-web

.switch {

  input {
    display: none;
  }

  label {
    -webkit-appearance: none;
    display: block;
    height: 30px;
    width: 56px;
    border-radius: 50px;
    background: #cacaca;
    position: relative;
    outline: none;
    cursor: pointer;
    overflow: hidden;
    margin-bottom: 0;
    transition: 0.2s;
    -webkit-transition: 0.2s;
    -moz-transition: 0.2s;

    &:before {
      content: '';
      position: absolute;
      top: 2px;
      left: 2px;
      height: 26px;
      width: 26px;
      background: white;
      border-radius: 50%;
      border-radius: 16px;
      z-index: 1;
      animation: uncheck 0.3s ease-out;
      -webkit-animation: uncheck 0.3s ease-out;
      -moz-animation: uncheck 0.3s ease-out;
      transform-origin: 0 0;
      -webkit-transform-origin: 0 0;
      -moz-transform-origin: 0 0;
    }

  }

  input:checked + label {
    background: #1abc9c;

    &:before {
      transform: translateX(26px);
      -webkit-transform: translateX(26px);
      -moz-transform: translateX(26px);
      animation: check 0.3s ease-out;
      -webkit-animation: check 0.3s ease-out;
      -moz-animation: check 0.3s ease-out;
      transform-origin: 100% 0;
      -webkit-transform-origin: 100% 0;
      -moz-transform-origin: 100% 0;
    }

  }

}

@keyframes uncheck {
  0% {
    transform: translateX(26px);
  }
  20% {
    transform: translateX(13px) scaleX(1.5);
  }
  40% {
    transform: translateX(0px) scaleX(0.75);
  }
  70% {
    transform: translateX(6px) scaleX(1);
  }
  100% {
    transform: translateX(0px);
  }
}

@-webkit-keyframes uncheck {
  0% {
    -webkit-transform: translateX(26px);
  }
  20% {
    -webkit-transform: translateX(13px) scaleX(1.5);
  }
  40% {
    -webkit-transform: translateX(0px) scaleX(0.75);
  }
  70% {
    -webkit-transform: translateX(6px) scaleX(1);
  }
  100% {
    -webkit-transform: translateX(0px);
  }
}

@-moz-keyframes uncheck {
  0% {
    -moz-transform: translateX(26px);
  }
  20% {
    -moz-transform: translateX(13px) scaleX(1.5);
  }
  40% {
    -moz-transform: translateX(0px) scaleX(0.75);
  }
  70% {
    -moz-transform: translateX(6px) scaleX(1);
  }
  100% {
    -moz-transform: translateX(0px);
  }
}

@keyframes check {
  0% {
    transform: translateX(2px);
  }
  20% {
    transform: translateX(13px) scaleX(1.5);
  }
  40% {
    transform: translateX(26px) scaleX(0.75);
  }
  70% {
    transform: translateX(20px) scaleX(1);
  }
  100% {
    transform: translateX(26px);
  }
}

@-webkit-keyframes check {
  0% {
    -webkit-transform: translateX(2px);
  }
  20% {
    -webkit-transform: translateX(13px) scaleX(1.5);
  }
  40% {
    -webkit-transform: translateX(26px) scaleX(0.75);
  }
  70% {
    -webkit-transform: translateX(20px) scaleX(1);
  }
  100% {
    -webkit-transform: translateX(26px);
  }
}

@-moz-keyframes check {
  0% {
    -moz-transform: translateX(2px);
  }
  20% {
    -moz-transform: translateX(13px) scaleX(1.5);
  }
  40% {
    -moz-transform: translateX(26px) scaleX(0.75);
  }
  70% {
    -moz-transform: translateX(20px) scaleX(1);
  }
  100% {
    -moz-transform: translateX(26px);
  }
}