#root{margin:0 auto;text-align:center}.App{position:relative}header{position:absolute;left:0;top:14px;right:0;height:var(--header-height);z-index:2000}main{position:absolute;left:0;top:var(--header-height);right:0;bottom:var(--footer-height)}.info{background-color:olive;color:#fff;padding:4px 8px;border-radius:5px;border:white 2px solid;font-family:sans-serif}button{height:27px}.buttonBox{position:fixed;top:20px;right:20px;width:66px;display:flex;flex-direction:column;z-index:2000}:root{--header-height: 0;--footer-height: 0}body{background-color:#6b8e23}