<body>
  <header class="hiThere">
    <h1>A bunch of :radio buttons at your service.</h1>
    <h3> // CSS only // – Please try out your options</h3>
    <p>This was NOT possible without: <a href="https://codepen.io/ig_design/pen/dLNKgM?editors=1100">this resource!</a>
  </header>
  <div>
    <p>Choose your tool</p>

    <input class="checkbox-tools" type="radio" name="tools" id="eclipse">
    <label for="eclipse">
      Eclipse
    </label>

    <input class="checkbox-tools" type="radio" name="tools" id="square">
    <label for="square">
      square
    </label>

    <input class="checkbox-tools" type="radio" name="tools" id="box">
    <label for="box">
      box
    </label>
  </div>
</body>
body {
  font-family: -apple-system, system-ui, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  margin: 0;
  padding: 0;
}

header {
  background-color: #e0b38d;
  position: relative;
  top: 0;
  box-shadow: 0 -3px 7px 1px rgba(49, 49, 49, 0.56);
  padding: 50px;
  margin-bottom: 40px;
}

div {
  margin: 50px;
}

/* This hides the default radio buttons 
[type="checkbox"]:checked,
[type="checkbox"]:not(:checked),
[type="radio"]:checked,
[type="radio"]:not(:checked){
  position: absolute;
  left: -9999px;
  width: 0;
  height: 0;
  visibility: hidden;
}

*/

[type="radio"]:checked,
[type="radio"]:not(:checked) {
  position: relative;
  left: 14px;
  z-index: 99;
}

.checkbox-tools:checked + label,
.checkbox-tools:not(:checked) + label {
  position: relative;
  display: inline-block;
  padding: 20px 20px 20px 40px;
  font-size: 14px;
  letter-spacing: 1px;
  text-align: left;
  border-radius: 4px;
  text-transform: uppercase;
  color: black;
  -webkit-transition: box-shadow 150ms ease;
  transition: box-shadow 150ms ease;
  left: -20px;
}

.checkbox-tools:checked + label {
  background-color: white;
  border: 1px solid #333;
  /* box-shadow: 0 8px 16px 0 rgba(0, 0, 0, 0.2); */
  box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.2);
}

.checkbox-tools:not(:checked) + label {
  background-color: white;
  border: 1px solid transparent;
  box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.2);
}

.checkbox-tools:not(:checked) + label:hover,
.checkbox-tools:checked + label:hover,
[type="radio"]:hover + label {
  box-shadow: 0 8px 12px 0 rgba(0, 0, 0, 0.2);
  cursor: pointer;
  -webkit-transition: box-shadow 300ms ease;
  transition: box-shadow 300ms ease;
}

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.