h2.section-heading { background-color: #f0f8ff; border-left: 5px solid #0073e6; padding: 8px 12px; border-radius: 6px; font-size: 20px; } h3.section-heading.section-h3 { background-color: #e6f2ff; border-left: 4px solid #3399ff; padding: 6px 10px; border-radius: 6px; font-size: 18px; } .video-contai…