style.css

body {
    padding: 5px;
    background-color: rgb(32, 29, 29);
    width: 130px;
}

.header {
    text-align: center;
}
.closeBtn{
    background-color: rgb(14, 14, 14);
    border: none;
    color: rgb(68, 66, 66);
    display: block;
    text-align: center;
    margin: auto;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 20px;
}
hr { 
    display: block;
    height: 1px;
    border: 0; 
    border-top: 3px solid rgb(14, 14, 14);
    margin: 1em 0;
    padding: 0; 
}
/*SWITCH*/
.ButtonLabel{
	display: inline-block;
    font-size: 20px;
    color: rgb(165, 165, 165);
    width: 85px;
}
.switch {
  position: relative;
  display: inline-block;
  width: 40px;
}

.switch input { 
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: -10px;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(10, 10, 10, 0.479);
  -webkit-transition: .4s;
  transition: .4s;
  height: 16px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 5px;
  bottom: 1px;
  background-color: rgb(195, 195, 195);
  -webkit-transition: .4s;
  transition: .4s;
}

input:checked + .slider:before {
  -webkit-transform: translateX(15px);
  -ms-transform: translateX(15px);
  transform: translateX(15px);
  background-color: rgb(194, 40, 40);
}

/* Rounded sliders */
.slider.round {
  border-radius: 34px;
}

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