html, body {
    font-family: 'Nanum Barun Gothic', sans-serif;
}

.radio {display:inline-flex;}
.radio input[type=radio] { display:none; }
.radio input[type=radio] + .radio-label { padding: 0.25rem 0.5rem; font-size: .875rem; background:#f8f9fa; color:#000  }
.radio input[type=radio]:checked + .radio-label { background-color:#000; color:#fff; }