body, h1, button { margin: 0; padding: 0; font-family: 'Arial', sans-serif; } body { display: flex; justify-content: center; align-items: center; height: 100vh; background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%); } #spielRaum { text-align: center; padding: 20px; background-color: #ffffffcc; width: 1000px; height: 700px; margin: auto; position: relative; } h1 { font-size: 2.5em; color: #333; margin-bottom: 20px; text-shadow: 1px 1px 2px #fff; } button { background-color: #4CAF50; color: white; border: none; padding: 15px 30px; border-radius: 25px; cursor: pointer; font-size: 1.2em; transition: background-color 0.3s, transform 0.3s; } button:hover { background-color: #45a049; transform: scale(1.1); } button:focus { outline: none; box-shadow: 0 0 10px rgba(0, 0, 0, 0.2); }