Advanced Radio Input | Learning Axis

HTML

CSS

body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  background: #444;
}
input {
  -webkit-appearance: none;
  display: block;
  margin: 10px;
  width: 24px;
  height: 24px;
  border-radius: 12px;
  cursor: pointer;
  vertical-align: middle;
  box-shadow: hsla(0, 0%, 100%, .15) 0 1px 1px, inset hsla(0, 0%, 0%, .5) 0 0 0 1px;
  background-color: hsla(0, 0%, 0%, .2);
  background-image: -webkit-radial-gradient(hsla(200, 100%, 90%, 1) 0%, hsla(200, 100%, 70%, 1) 15%, hsla(200, 100%, 60%, .3) 28%, hsla(200, 100%, 30%, 0) 70%);
  background-repeat: no-repeat;
  -webkit-transition: background-position .15s cubic-bezier(.8, 0, 1, 1),
    -webkit-transform .25s cubic-bezier(.8, 0, 1, 1);
  outline: none;
}
input:checked {
  -webkit-transition: background-position .2s .15s cubic-bezier(0, 0, .2, 1),
    -webkit-transform .25s cubic-bezier(0, 0, .2, 1);
}
input:active {
  -webkit-transform: scale(1.5);
  -webkit-transition: -webkit-transform .1s cubic-bezier(0, 0, .2, 1);
}
input, input:active {
  background-position: 0 24px;
}
input:checked {
  background-position: 0 0;
}
input:checked~input,
input:checked~input:active {
  background-position: 0 -24px;
}