.layout-wrap { width: 100%; height: 100vh; display: flex; .left-menu { width: 200px; } .right-cont { width: calc(100% - 200px); display: flex; flex-direction: column; .right-top { width: 100%; height: 48px; } .right-main { flex: 1; box-sizing: border-box; padding: 24px; overflow-y: auto; background-color: #f1f2f9; } } }