.switch {
    position: relative;
    display: inline-block;
    width: 40px;
    height: 20px;
    margin-right: 5px;
}

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

.switch-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    -webkit-transition: .4s;
    transition: .4s;
    border-radius: 20px;
}

.switch-slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 2px;
    bottom: 2px;
    background-color: white;
    -webkit-transition: .4s;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .switch-slider {
    background-color: #2196F3;
}

input:focus + .switch-slider {
    box-shadow: 0 0 1px #2196F3;
}

input:checked + .switch-slider:before {
    -webkit-transform: translateX(19px);
    -ms-transform: translateX(19px);
    transform: translateX(19px);
}