h1 { text-align: center; } #duplicate-button { margin: auto; color: white; background: #1565c0; border-radius: 100vh; } #component-0 { max-width: 900px; margin: auto; padding-top: 1.5rem; } #banner-image { display: block; margin-left: auto; margin-right: auto; } #chat-message { font-size: 14px; min-height: 300px; }