div.dt-button-info { position: fixed; top: 50%; left: 50%; width: 400px; margin-top: -100px; margin-left: -200px; background-color: white; border: 2px solid #111; box-shadow: 3px 3px 8px rgba( 0, 0, 0, 0.3); border-radius: 3px; text-align: center; z-index: 21; h2 { padding: 0.5em; margin: 0; font-weight: normal; border-bottom: 1px solid #ddd; background-color: #f3f3f3; } > div { padding: 1em; } }