.layout-doc{ display: flex; flex-direction: column; height: 100%; }
.layout-head, .layout-foot{ height: 50px; padding: 8px; background: #eee; }
.layout-body{ flex: 1; height: 100%; -webkit-overflow-scrolling: touch; overflow-y: auto; }
input { width: 100%; height: 100%; }
/*使用autoprefixer实现flex自动补全*/