// 应用壳 .app-container { width: 100%; height: 100%; padding: 0; margin: 0; } // 应用头部 .app-header { .flex(row, space-between, center); } // 应用正文 .app-content { display: flex; width: 100%; height: 100%; flex-direction: column; .app-content__body{ height: calc(100% - 50px); width: 100%; } .app-content__footer{ width: 100%; height: 50px; } }