.max-height-300 pre {
  max-height: 300px;
}

.theme-switch {
  display: inline-block;
  height: 24px;
  position: relative;
  width: 50px;
}

.theme-switch input {
  display: none;
}

.slider {
  background-color: #ccc;
  bottom: 0;
  cursor: pointer;
  left: 0;
  position: absolute;
  right: 0;
  top: 0;
  transition: 400ms;
}

.slider::before {
  background-color: #fff;
  bottom: 4px;
  content: "";
  height: 16px;
  left: 4px;
  position: absolute;
  transition: 400ms;
  width: 16px;
}

input:checked + .slider {
  background-color: #66bb6a;
}

input:checked + .slider::before {
  transform: translateX(26px);
}

.slider.round {
  border-radius: 34px;
}

.slider.round::before {
  border-radius: 50%;
}