.adspace{text-align:center;box-sizing:border-box;min-height:100%;padding:20px}
.content-area{box-sizing:border-box;min-height:100%;padding:40px}.content-area p{margin-bottom:20px;line-height:1.6}.lesson-title{font-size:3.5rem}.content{font-size:16px;line-height:1.7}.content h1{font-size:36px}.content h2{margin-top:10px;font-size:28px}.content h3{margin-top:10px;font-size:24px}.content h4{margin-top:10px;font-size:20px}.content h5{margin-top:10px;font-size:18px}.content h6{margin-top:10px;font-size:16px}.content p{max-width:800px}.content ul,.content ol{margin:15px 0 15px 30px}.content li{margin-bottom:8px}.content a:hover{text-decoration:underline}.content blockquote{color:#ccc;border-left:4px solid #00bfff;margin:20px 0;padding-left:15px;font-style:italic}.content code{color:#0f9;background:#111;border-radius:4px;padding:2px 6px;font-family:monospace;font-size:.95em}.code-block{background:#111;border-radius:8px;margin:20px 0;padding:15px;overflow-x:auto}.code-block code{background:0 0;padding:0;font-size:15px}.lesson-image{border-radius:8px;max-width:100%;margin:25px 0;display:block}.content-area table{border-collapse:collapse;width:100%;margin:20px 0}.content-area th,.content-area td{border:1px solid #222;padding:10px}.content-area th{background:#111}