style.css

button{
    border: none;
    background-color: orange;
    border-radius: 12px;
    transition: 200ms;
    height: 70px;
    width: 70px;
}

button:hover{
    background-color: rgb(237, 154, 0);
    transform: translateY(-5%);
}

button:active{
    background-color: rgb(207, 134, 0);
    transform: translateY(10%);
}

input[type=checkbox]{
	height: 0;
	width: 0;
	visibility: hidden;
}

label {
	cursor: pointer;
	text-indent: -9999px;
	width: 200px;
	height: 100px;
	background: grey;
	display: block;
	border-radius: 100px;
	position: relative;
}

label:after {
	content: '';
	position: absolute;
	top: 5px;
	left: 5px;
	width: 90px;
	height: 90px;
	background: #fff;
	border-radius: 90px;
	transition: 0.3s;
}

input:checked + label {
	background: #bada55;
}

input:checked + label:after {
	left: calc(100% - 5px);
	transform: translateX(-100%);
}

label:active:after {
	width: 130px;
}

body{
    font-family:Verdana, Geneva, Tahoma, sans-serif;
    font-size: larger;
    text-align: center;
    background-color: rgb(20, 20, 87);
    color: white;
    transition: 700ms;
}

#vuvu{
    text-align: left;
}