/* Hide the default checkbox */
.container input {
  display: none;
}

.container {
  display: block;
  position: relative;
  cursor: pointer;
  font-size: 30px;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.checkmark {
  position: relative;
  top: 0;
  left: 0;
  height: 1.3em;
  width: 1.3em;
  background-color: rgb(255, 255, 255);
  border-radius: 0.3em;
  transition: all 0.25s;
  --spread: 50px;
}

.container input:checked ~ .checkmark {
  background-color: #000000;
  box-shadow: -10px -10px var(--spread) 0px rgb(17, 0, 248),
    0 -10px var(--spread) 0px rgb(243, 11, 243),
    10px -10px var(--spread) 0px rgb(253, 228, 0),
    10px 0 var(--spread) 0px rgb(107, 255, 21),
    10px 10px var(--spread) 0px rgb(76, 0, 255),
    0 10px var(--spread) 0px rgb(255, 196, 0),
    -10px 10px var(--spread) 0px rgb(90, 105, 240);
}

/* Create the checkmark/indicator (hidden when not checked) */
.checkmark:after {
  content: "";
  position: absolute;
  transform: rotate(0deg);
  border: 0.1em solid rgba(0, 0, 0, 0.863);
  left: 0;
  top: 0;
  width: 1.1em;
  height: 1.1em;
  border-radius: 0.25em;
  transition: all 0.25s, border-width 0.1s;
}

/* Show the checkmark when checked */
.container input:checked ~ .checkmark:after {
  left: 0.45em;
  top: 0.25em;
  width: 0.25em;
  height: 0.5em;
  border-color: rgba(238, 238, 238, 0) white white #fff0;
  border-width: 0 0.15em 0.15em 0;
  border-radius: 0em;
  transform: rotate(45deg);
}