body{font-family:"Roboto Slab",serif;margin:0;background:#eceff1;color:#263238;}header{background:#263238;color:#ffca28;padding:25px;text-align:left;}nav{background:#37474f;display:flex;justify-content:flex-start;gap:20px;padding:10px;}main{padding:34px;}section.block{background:#fff;border-radius:12px;border:1px solid #b0bec5;padding:20px;margin:22px;}h1{color:#263238;font-size:2.3rem;}p{font-size:1rem;}hr{border:1px solid #ffca28;}footer{background:#263238;color:#fff;text-align:right;padding:18px;} ol{list-style:decimal-leading-zero;color:#222;font-size:1.1rem;background:#e0f7fa;padding:18px;border-radius:6px;}   