.tinh-toan,.thanhtien {float:left;padding:20px;}
.thanhtien {width:100%;padding:20px;background:#eee;margin-top:50px;border-radius:5px;}
.form-group {float:left;width:100%;margin-bottom:20px;}
.tinh-toan,.thanhtien {float:left;padding:20px;width:50%;}
.form-group .tinhgia {width:100%;padding:10px;background:#08c;color:#fff;user-select:none;cursor:pointer;text-align:center;border-radius:5px;text-transform:uppercase;font-weight:bold;}