style.css

        body {
            margin: 0;
        }

        a {
            color: black;
        }

        h1 {
            font-size: 45px;
            text-align: center;
            border-bottom: 1px solid gray;
            margin: 0;
            padding: 20px;
        }

        ol {
            border-right: 1px solid gray;
            width: 100px;
            margin: 0;
            padding: 20px;
        }

        #grid {
            display: grid;
            grid-template-columns: 150px 1fr;
        }

        #grid ol {
            padding-left: 33px;
        }

        #grid #article {
            padding-left: 25px;
        }

        @media(max-width:800px) {
            #grid {
                display: block;
            }

            ol {
                border-right: none;
            }

            h1 {
                border-bottom: none;
            }
        }