<div class="container">
  <label class="switch" for="checkbox">
    <input type="checkbox" id="checkbox" />
    <div class="slider round"></div>
  </label>
</div>

.switch {
  display: inline-block;
  height: 34px;
  position: relative;
  width: 60px;
}

.switch input {
  display:none;
}

.slider {
  background-color: #ccc;
  bottom: 0;
  cursor: pointer;
  left: 0;
  position: absolute;
  right: 0;
  top: 0;
  transition: .4s;
}

.slider:before {
  background-color: #fff;
  bottom: 4px;
  content: "";
  height: 26px;
  left: 4px;
  position: absolute;
  transition: .4s;
  width: 26px;
}

input:checked + .slider {
  background-color: #66bb6a;
}

input:checked + .slider:before {
  transform: translateX(26px);
}

.slider.round {
  border-radius: 34px;
}

.slider.round:before {
  border-radius: 50%;
}














/* general styling */
html, body {
  height: 100%;
  margin: 0;
}

body {
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  background-color: #f1f2f3;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
}

.container {
  margin: 0 auto;
}