<div class="container">
  <input type="checkbox" id="checkbox-1"><label for="checkbox-1">First Item's Label</label>
  <br>
  <input type="checkbox" id="checkbox-2" checked><label for="checkbox-2">Second Item's Label</label>
  <br>
  <input type="checkbox" id="checkbox-3"><label for="checkbox-3">Third Item's Label</label>
  <br>
  <input type="checkbox" id="checkbox-4"><label for="checkbox-4">Fourth Item's Label</label>
  <hr>
  <input type="radio" id="radio-1"><label for="radio-1">First Item's Label</label>
  <br>
  <input type="radio" id="radio-2" checked><label for="radio-2">Second Item's Label</label>
  <br>
  <input type="radio" id="radio-3"><label for="radio-3">Third Item's Label</label>
  <br>
  <input type="radio" id="radio-4"><label for="radio-4">Fourth Item's Label</label>
  <hr>
  <select name="select" id="select">
    <option value="one">One</option>
    <option value="two">Two</option>
    <option value="three" selected>Three</option>
    <option value="four">Four</option>
  </select>
</div>
body {
  color: #555;
  font-size: 1.25em;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

hr {
  margin: 50px 0;
}

.container {
  margin: 40px auto;
  max-width: 700px;
}

input[type="checkbox"]:checked {
  width: 20px;
  height: 20px;
}

input[type="radio"]:checked {
  width: 20px;
  height: 20px;
}

select {
  padding: .25em 1em;
}

option:checked {
  background-color: deepPink;
  color: white;
}
/* style labels */

input[type="checkbox"]:checked + label {
  text-decoration: line-through;
}

input[type="radio"]:checked + label {
  color: #0099CC;
}