body { margin: 0; padding: 0; background-size: cover; overflow-x: hidden; user-select: none; } body::-webkit-scrollbar { display: none; } body, textarea, pre { font-family: 'Segoe UI', '微软雅黑', 'Microsoft YaHei', sans-serif; } * { box-sizing: border-box; word-wrap: break-word; -webkit-overflow-scrolling: touch; } p, pre { margin: 0; } a { text-decoration: none; color: #00c; cursor: pointer; } input, textarea { border-radius: 5px; border: 1px solid black; outline: none; } input { padding: 0 1em; line-height: 2em; } audio { vertical-align: middle; } pre { white-space: pre-wrap; } button, .button { color: black; background-color: rgba(255,255,255,.5); border-radius: 5px; text-align: center; border: 1px solid black; line-height: 2em; margin: 0 .5em; } button:disabled, .button:disabled { background-color: rgba(128,128,128,.5); } code { font-family: Consolas, Courier, monospace; }