<label class="switch">
  <input type="checkbox">
  <span class="slider"></span>
</label>
<style>
/* From Uiverse.io by Alaner-xs - Tags: switch */
/* The switch - the box around the slider */
.switch {
 font-size: 15px;
 position: relative;
 display: inline-block;
 width: 4.5em;
 height: 2em;
}

/* Hide default HTML checkbox */
.switch input {
 background-color: transparent;
 opacity: 0;
 width: 0;
 height: 0;
}

/* The slider */
.slider {
 position: absolute;
 cursor: pointer;
 top: 0;
 left: 0;
 right: 0;