.btc-calculator{background:#f8f8f8;padding:20px;max-width:500px;border:1px solid #ccc;margin:auto;margin-bottom:30px}.btc-calculator input,.btc-calculator button{margin-top:10px;width:100%;padding:10px}#btc-result{margin-top:20px;background:#fff;padding:10px;border:1px solid #ddd;color:#017801;font-family:"Noto Serif",serif,georgia,arial;font-size:19px}#btc-result strong{color:red}#btc-result .result{margin-bottom:10px;padding-bottom:10px;border-bottom:1px dashed #ccc}