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.radio{ position:relative; }
.radio label { cursor:pointer; height:20px; width:20px; display:inline-block; background: #FFFFFF; border: 1px solid #C8C8C8; border-radius: 100px; vertical-align:text-top; }
.radio input[type=radio]:checked+label { background:#00c7d9; border: 1px solid #00c7d9; }
.radio input[type=radio]:checked+label div { width:8px; height:5px; border-left:2px solid #fff; border-bottom:2px solid #fff; margin-top: 5px; margin-left: 5px; transform: rotate(-53deg);