.switch_1 input[type="checkbox"] {
    font-size: 10px;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    width: 3.5em;
    height: 1.5em;
    background: #ddd;
    border-radius: 3em;
    position: relative;
    cursor: pointer;
    outline: none;
    -webkit-transition: all .2s ease-in-out;
    transition: all .2s ease-in-out;
}

.switch_1 [type="checkbox"]:checked {
    background: #0d6efd;
}

.switch_1 [type="checkbox"]:after {
    position: absolute;
    content: "";
    width: 1.5em;
    height: 1.5em;
    border-radius: 50%;
    background: #fff;
    -webkit-box-shadow: 0 0 .25em rgba(0,0,0,.3);
    box-shadow: 0 0 .25em rgba(0,0,0,.3);
    -webkit-transform: scale(.7);
    transform: scale(.7);
    left: 0;
    -webkit-transition: all .2s ease-in-out;
    transition: all .2s ease-in-out;
}

.switch_1 [type="checkbox"]:checked:after {
    left: calc(100% - 1.5em);
}
.switch_1 label {
    font-size: 1em;
    margin-left: 10px;
}