checkbox

HTML

<html>
<head>

</head>
<body>


<div class="h2">
            Кастомный чекбокс
        </div>
	  		<div class="Elements__item">
	  		  <div class="Elements__checkbox">
	  			<label class="mark">One
                  <input type="checkbox" checked="checked">
                  <span class="checkmark"></span>
                </label>

                <label class="mark">Two
                  <input type="checkbox">
                  <span class="checkmark"></span>
                </label>

                <label class="mark">Three
                  <input type="checkbox">
                  <span class="checkmark"></span>
                </label>

                <label class="mark">Four
                  <input type="checkbox">
                  <span class="checkmark"></span>
                </label>
	  		  </div>
	  		</div>
        </body>
        </html>

CSS

.mark {
  display: block;
  position: relative;
  padding-left: 35px;
  margin-bottom: 12px;
  cursor: pointer;
  font-size: 22px;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

.mark input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

.checkmark {
  position: absolute;
  top: 0;
  left: 0;
  height: 25px;
  width: 25px;
  background-color: #eee;
}

.mark:hover input ~ .checkmark {
  background-color: #ccc;
}

.mark input:checked ~ .checkmark {
  background-color: #330080;
}

.checkmark:after {
  content: "";
  position: absolute;
  display: none;
}

.mark input:checked ~ .checkmark:after {
  display: block;
   border-width: 0 3px 3px 0;
}

.mark .checkmark:after {
  left: 10px;
  top: 7px;
  width: 5px;
  height: 10px;
  border: solid white;
  border-width:0;
  -webkit-transform: rotate(45deg);
  -ms-transform: rotate(45deg);
  transform: rotate(45deg);
  transition: border-width 2s linear;
}