Nice Checkbox

checkbox.html

<label for="check">Check</label>
<input 
  type="checkbox" 
  class="ui-toggle"
  id="check" 
  name="check"
  value="1"
>

style.css

/* Colors */
input[type=checkbox].ui-toggle {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  -webkit-tap-highlight-color: transparent;
  width: auto;
  height: auto;
  vertical-align: middle;
  position: relative;
  border: 0;
  outline: 0;
  cursor: pointer;
  margin: 0 4px;
  background: none;
  box-shadow: none;
}
input[type=checkbox].ui-toggle:focus {
  box-shadow: none;
}
input[type=checkbox].ui-toggle:before {
  content: "";
  width: 21px;
  height: 21px;
  display: block;
  position: absolute;
  top: 2px;
  left: 2px;
  margin: 0;
  border-radius: 50%;
  background-color: #ffffff;
}
input[type=checkbox].ui-toggle:after {
  content: "NO";
  text-indent: 28px;
  font-size: 12px;
  font-weight: bold;
  line-height: 26px;
  color: #0A2645;
  width: 60px;
  height: 25px;
  display: inline-block;
  background-color: #d8d8d8;
  border-radius: 72px;
  box-shadow: 0 0 12px rgba(0, 0, 0, 0.15) inset;
}
input[type=checkbox].ui-toggle:checked:before {
  left: 37px;
}
input[type=checkbox].ui-toggle:checked:after {
  content: "YES";
  text-indent: 8px;
  color: #ffffff;
  background-color: #0A2645;
}
input[type=checkbox].ui-toggle, input[type=checkbox].ui-toggle:before, input[type=checkbox].ui-toggle:after, input[type=checkbox].ui-toggle:checked:before, input[type=checkbox].ui-toggle:checked:after {
  transition: ease 0.15s;
}

style.scss

/* Colors */
$white: #ffffff;
$grey: #d8d8d8;
$dark: #0A2645;

input[type="checkbox"].ui-toggle {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;

  -webkit-tap-highlight-color: transparent;

  width: auto;
  height: auto;
  vertical-align: middle;
  position: relative;
  border: 0;
  outline: 0;
  cursor: pointer;
  margin: 0 4px;
  background: none;
  box-shadow: none;

  &:focus {
    box-shadow: none;
  }
  &:before {
    content: '';
    width: 21px;
    height: 21px;
    display: block;
    position: absolute;
    top: 2px;
    left: 2px;
    margin: 0;
    border-radius: 50%;
    background-color: $white;
  }
  &:after {
    content: 'NO';
    text-indent: 28px;
    font-size: 12px;
    font-weight: bold;
    line-height: 26px;
    color: $dark;
    width: 60px;
    height: 25px;
    display: inline-block;
    background-color: $grey;
    border-radius: 72px;
    box-shadow: 0 0 12px rgb(0 0 0 / 15%) inset;
  }
  &:checked:before {
    left: 37px;
  }
  &:checked:after {
    content: 'YES';
    text-indent: 8px;
    color: $white;
    background-color: $dark;
  }

  &,
  &:before,
  &:after,
  &:checked:before,
  &:checked:after {
    transition: ease .15s;
  }

}

The CodePen could be seen at:

https://codepen.io/otakupahp/pen/QWMwENv