Checkbox with one pseudo element with only css

checkbox.html

<div class="checkbox">
  <label>
    <input type="checkbox"> Checkbox
  </label>
</div>

style.scss

.checkbox {
  position: relative;
  padding-top: 7px;

  label {
    padding-left: 20px;
    cursor: pointer;
  }

  input[type="checkbox"] {
    position: absolute;
    display: inline-block;
    -webkit-appearance: none;
    margin: 0;
    cursor: pointer;
    left: 0;
    bottom: 3px;
    border-radius: 2px;
    outline: none;
    width: 14px;
    height: 14px;
    border: 1px solid #ddd;
    background: white;

    &:after {
      box-sizing: border-box;
      position: absolute;
      bottom: 1px;
      left: 3px;
      content: " ";
      width: 5px;
      height: 10px;
      border: solid transparent;
      border-width: 0 2px 2px 0;
      transform: rotate(45deg) translate(0px, -1px);
    }

    &:checked {
      &:after {
        border-color: green;
      }
    }
  }
}