styles.css

.stApp > header {
 background-color: transparent;
}

.stApp {
 margin: auto;
 font-family: -apple-system, BlinkMacSystemFont, sans-serif;
 overflow: auto;
 background: rgb(14,17,23);
 background: radial-gradient(circle, rgba(14,17,23,1) 0%, rgba(121,9,9,0.8037411971830986) 50%, rgba(14,17,23,1) 100%);
 animation: gradient 30s ease infinite;
 background-size: 100%;
 background-attachment: fixed;
}