.container{font-family:Arial,sans-serif;padding:0 2rem}.header{display:flex;align-items:center;justify-content:space-between;padding:1rem 0;border-bottom:1px solid #ccc}.logo{height:60px}.nav a{margin:0 1rem;text-decoration:none;color:#07c}nav a:hover{text-decoration:underline}main{padding:2rem 0}section{margin-bottom:3rem}footer{text-align:center;padding:2rem 0;border-top:1px solid #ccc;color:#555}