Highlight the active/current (pressed) button.
<style> .radio { margin: 0.5rem; } .radio input[type=radio] { position: absolute; opacity: 0; } .radio input[type=radio] + .radio-label:before { content: ""; background: #f4f4f4; border-radius: 100%; border: 1px solid #b4b4b4; display: inline-block; width: 1.4em; height: 1.4em; position: relative; top: -0.2em; margin-right: 1em; vertical-align: top; cursor: pointer; text-align: center; transition: all 250ms ease; } .radio input[type=radio]:checked + .radio-label:before { background-color: #3197EE; box-shadow: inset 0 0 0 4px #f4f4f4; } .radio input[type=radio]:focus + .radio-label:before { outline: none; border-color: #3197EE; } .radio input[type=radio]:disabled + .radio-label:before { box-shadow: inset 0 0 0 4px #f4f4f4; border-color: #b4b4b4; background: #b4b4b4; } .radio input[type=radio] + .radio-label:empty:before { margin-right: 0; } </style> <div class="radio"> <input id="radio-1" name="radio" type="radio" checked> <label for="radio-1" class="radio-label">Checked</label> </div> <div class="radio"> <input id="radio-2" name="radio" type="radio"> <label for="radio-2" class="radio-label">Unchecked</label> </div> <div class="radio"> <input id="radio-3" name="radio" type="radio" disabled> <label for="radio-3" class="radio-label">Disabled</label> </div>