html,body{position:relative;height:100%}body{display:flex;flex-direction:column;margin:0;padding:0;line-height:1.5;font-family:-apple-system,system-ui,Helvetica Neue,Helvetica,Arial,Segoe UI,Roboto,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.demo-nav{height:56px;display:flex;align-items:center;justify-content:center;background:#212121;box-sizing:border-box;border-bottom:1px solid rgba(255,255,255,.1)}button{-webkit-appearance:none;-moz-appearance:none;appearance:none;cursor:pointer;background:transparent;border:1px solid #aaa;color:#aaa;height:32px;font-weight:700;border-radius:8px;padding:0 16px}button+button{margin-left:16px}button:hover{background:#ffffff1a}button.active{background:#114df1;border-color:#114df1;color:#fff}iframe{height:100%;flex-shrink:10;min-height:0}