:root{--background: #fff;--foreground: #000}*{box-sizing:border-box}html,body,#root{margin:0;width:100%;min-height:100%}body{background:var(--background);color:var(--foreground);font-family:Arial,Helvetica,sans-serif}.app-shell{align-items:center;display:flex;justify-content:center;min-height:100vh;width:100vw}.logo{height:auto;width:100vw}