<div class="boxes">
  <input type="checkbox" id="box-1">
  <label for="box-1">Sustainable typewriter cronut</label>

  <input type="checkbox" id="box-2" checked>
  <label for="box-2">Gentrify pickled kale chips </label>

  <input type="checkbox" id="box-3">
  <label for="box-3">Gastropub butcher</label>
</div>

@import url(https://fonts.googleapis.com/css?family=Open+Sans);

/*Page styles*/
html { height: 100%; }

body {
  height: 100%;
  margin: 0;
  background: #363636;
  display: -webkit-flex;
  display: flex;
  align-items: center;
}

.boxes {
  margin: auto;
  padding: 50px;
  background: #484848;
}

/*Checkboxes styles*/
input[type="checkbox"] { display: none; }

input[type="checkbox"] + label {
  display: block;
  position: relative;
  padding-left: 35px;
  margin-bottom: 20px;
  font: 14px/20px 'Open Sans', Arial, sans-serif;
  color: #ddd;
  cursor: pointer;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

input[type="checkbox"] + label:last-child { margin-bottom: 0; }

input[type="checkbox"] + label:before {
  content: '';
  display: block;
  width: 20px;
  height: 20px;
  border: 1px solid #6cc0e5;
  position: absolute;
  left: 0;
  top: 0;
  opacity: .6;
  -webkit-transition: all .12s, border-color .08s;
  transition: all .12s, border-color .08s;
}

input[type="checkbox"]:checked + label:before {
  width: 10px;
  top: -5px;
  left: 5px;
  border-radius: 0;
  opacity: 1;
  border-top-color: transparent;
  border-left-color: transparent;
  -webkit-transform: rotate(45deg);
  transform: rotate(45deg);
}