*{box-sizing:border-box}body{margin:0;font-family:Helvetica Neue,Arial,sans-serif;background:#f5f6f7}a{color:inherit;text-decoration:none}.app-container{min-height:100vh;background:#f5f6f7}.header-bar{background:#409eff;color:#fff;display:flex;align-items:center;padding:0 16px;height:56px}.header-title{flex:1;font-weight:600}.content{padding:16px}