body{margin:0;font-family:system-ui,Segoe UI,Roboto,sans-serif}.layout{height:100vh}.panel{box-sizing:border-box;flex-direction:column;gap:16px;height:100%;padding:16px;display:flex;overflow-y:auto}.preview{border:none;width:100%;height:100%;display:block}.preview-spin,.preview-spin .ant-spin-container{height:100%}