.bmi-calculator{max-width:420px;border:1px solid #ddd;border-radius:10px;padding:20px;font-family:Arial;background:#fff}
.bmi-calculator h3{text-align:center;margin-bottom:15px}
.bmi-row{display:flex;gap:10px;margin-bottom:12px}
.bmi-col{flex:1}
.bmi-calculator label{font-size:.9em;margin-bottom:4px;display:block}
.bmi-calculator input,.bmi-calculator select{width:100%;padding:8px;border-radius:5px;border:1px solid #ccc}
#bmi-calc{width:100%;padding:10px;background:#ffffff;color:#000000;border:none;border-radius:6px;cursor:pointer}
#bmi-calc:hover{background:#000000;color:#ffffff}
.bmi-results{margin-top:15px;padding:12px;background:#f5f7fa;border-radius:6px}