:root{--header-height: 56px;--breadcrumb-height: 30px;--footer-height: 36px;--builder-navbar-height: 40px;--app-footer-height: 36px;--node-bg-color: #eeeeee}*{box-sizing:border-box}html,body{margin:0;padding:0;height:100%;font-size:16px;text-align:left;font-family:Arial,sans-serif;background:#fff}button{cursor:pointer}