body{margin:0;overscroll-behavior-y:none;overscroll-behavior-x:none}body *{flex-shrink:0;box-sizing:border-box}::-webkit-scrollbar{width:4px;height:4px}::-webkit-scrollbar-track{background-color:#fff}::-webkit-scrollbar-thumb{background-color:#91d2f3cc}::-webkit-scrollbar-corner{background-color:transparent}::-webkit-resizer{background-color:transparent}button:active{transform:scale(1.1)}::placeholder{color:#ddd;opacity:1}.key-label{display:inline-block;font-size:13px;line-height:20px;background-color:#ebebeb;margin:2px;padding:0 4px;border-radius:4px}