#root{display:flex;flex-direction:column;height:100%;width:100%}body{margin:0}nav{padding:16px;background-color:#f0f0f0;border-bottom:1px solid #d0d0d0;display:flex;gap:20px}nav a{text-decoration:none;color:#1890ff;font-weight:500}nav a:hover{color:#40a9ff}