<fieldset>
  <legend>Radio Control Quality</legend>
  <label for="accessible">
    <input type="radio" value="accessible" name="quality" id="accessible"> <span>accessible</span>
  </label>

  <label for="pretty">
    <input type="radio" value="pretty" name="quality" id="pretty"> <span>pretty</span>
  </label>

  <label for="accessible-and-pretty">
    <input type="radio" value="pretty"  name="quality" id="accessible-and-pretty" checked> <span>accessible and pretty</span>
  </label>
</fieldset>

<p class="p">Demo by Heydon Pickering. <a href="http://www.sitepoint.com">See article</a>.</p>

@import url(https://fonts.googleapis.com/css?family=Cabin:700);

/* HTML5 Boilerplate accessible hidden styles */
[type="radio"] {
  border: 0; 
  clip: rect(0 0 0 0); 
  height: 1px; margin: -1px; 
  overflow: hidden; 
  padding: 0; 
  position: absolute; 
  width: 1px;
}

/* One radio button per line */
label {
  display: block;
  cursor: pointer;
  line-height: 2.5;
  font-size: 1.5em;
}

[type="radio"] + span {
  display: block;
}

/* the basic, unchecked style */
[type="radio"] + span:before {
  content: '';
  display: inline-block;
  width: 1em;
  height: 1em;
  vertical-align: -0.25em;
  border-radius: 1em;
  border: 0.125em solid #fff;
  box-shadow: 0 0 0 0.15em #000;
  margin-right: 0.75em;
  transition: 0.5s ease all;
}

/* the checked style using the :checked pseudo class */
[type="radio"]:checked + span:before {
  background: green;
  box-shadow: 0 0 0 0.25em #000;
}

/* never forget focus styling */
[type="radio"]:focus + span:after {
  content: '\0020\2190';
  font-size: 1.5em;
  line-height: 1;
  vertical-align: -0.125em;
}

/* Nothing to see here. */
body {
  margin: 3em auto;
  max-width: 30em;
  font-family: Cabin, serif;
}

fieldset {
  font-size: 1em;
  border: 2px solid #000;
  padding: 2em;
  border-radius: 0.5em;
}

legend {
  color: #fff;
  background: #000;
  padding: 0.25em 1em;
  border-radius: 1em;
}

.p {
  text-align: center;
  font-size: 14px;
  padding-top: 120px;
}