*{
margin: 0;
padding: 0;
box-sizing: border-box;
}
body{
display: flex;
justify-content: center;
align-items: center;
background: #333;
min-height: 100vh;
}
label{
position: relative;
top: -150px;
width: 150px;
height: 75px;
background: #212121;
border-radius: 10px;
}
label input{
appearance: none;
}
label span{
position: absolute;
top: 0;
left: 0;
width: 75px;
height: 75px;
background: #333;
border: 6px solid #212121;
border-radius: 14px;
cursor: pointer;
transition: 0.5s;
display: flex;
justify-content: center;
align-items: center;

}
label input:checked ~ span {
left: 75px;
}
label span ion-icon{
color: rgba(255,255,255,0.25);
font-size: 2em;
transition: 0.5s;
}
label input:checked ~ span ion-icon{
    color: rgba(255,255,255,1);
    filter: drop-shadow(0 0 5px #fff)  drop-shadow(0 0 10px #fff)
    drop-shadow(0 0 15px #fff);;
}
.bulb{
position: absolute;
top: 80px;
left: 50%;
transform: translateX(-50%);
width: 348px;
height: 408px;
pointer-events: none;
background: url("../img/off.jpg");
transition: 0.5s;
}
label input:checked ~ .bulb{
background: url("../img/on.jpg");
}