"```html
Bottom Curve Effect with CSS body { margin: 0; padding: 0; height: 100vh; background-color: #f0f0f0; display: flex; justify-content: center; align-items: flex-end; } .curve-container { position: relative; width: 100%; height: 100px; background-color: #333; } .curve { position: absolute; bottom: -50px; width: 100%; height: 100px; background-color: #333; border-radius: 50%; }