* {
  margin: 0px;
  padding: 0px;
}

body {
  box-sizing: border-box;
  display: flex;
  justify-content: center;
  align-items: center;
  width: auto;
  height: 100vh;
  font-size: 3vw;
  gap: 8vw;
  background-color: rgb(36, 36, 36);
}

.icon {
  color: rgb(83, 83, 83);
  cursor: pointer;
  width: 3vw;
  height: 5vh;
  display: flex;
  justify-content: space-evenly;
  align-items: center;
  position: relative;
}

#button1:checked + .icon,
#button2:checked + .icon,
#button3:checked + .icon,
#button4:checked + .icon,
#button5:checked + .icon {
  animation: colors 10s linear infinite;
}

@keyframes colors {
  0% {
    color: red;
    text-shadow: 0px 0px 5px red;
  }
  15% {
    color: orange;
    text-shadow: 0px 0px 5px orange;
  }
  30% {
    color: yellow;
    text-shadow: 0px 0px 5px yellow;
  }
  45% {
    color: rgb(13, 214, 13);
    text-shadow: 0px 0px 5px rgb(13, 214, 13);
  }
  60% {
    color: rgb(28, 163, 247);
    text-shadow: 0px 0px 5px rgb(28, 163, 247);
  }
  75% {
    color: blue;
    text-shadow: 0px 0px 5px blue;
  }
  90% {
    color: magenta;
    text-shadow: 0px 0px 5px magenta;
  }
  100% {
    color: red;
    text-shadow: 0px 0px 5px red;
  }
}