.checkbox-btn {
  display: none;
}
.switch-btn-label {
  border: 2px solid #bbb;
  border-radius: 30px;
  padding: 5px;
  cursor: pointer;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  -o-user-select: none;
  user-select: none;
}

.fa-sun {
  color: orange;
  font-size: 25px;
  text-shadow: 0px 0px 20px orange;
  transform: translateX(25px);
  transition: 0.3s;
}
.fa-moon {
  color: white;
  font-size: 25px;
  text-shadow: 0px 0px 20px white;
  transform: translateX(0px);
  opacity: 0;
  transition: 0.3s;
}
#switch-button:checked ~ label > .fa-sun {
  opacity: 0;
  transform: translateX(0px);
}
#switch-button:checked ~ label > .fa-moon {
  opacity: 1;
  transform: translateX(-25px);
}
#switch-button:checked ~ .content {
  background: black;
  color: white;
}