@layer base{*{box-sizing:border-box}body{font:16px verdana;max-width:800px;margin:2em auto}}body{max-width:350px;--spacing: 2.5em}header{text-align:center;margin:var(--spacing) 0}header img{width:100%}header p{display:none}main{margin:var(--spacing) 0}