style.css

body {
    /* background-image: url('https://your-image-url.com/background.jpg'); */
    background-size: cover;
}

.stButton>button {
    background-color: #fcd600;
    color: white;
    border: none;
    padding: 10px 24px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 4px 2px;
    transition-duration: 0.4s;
    cursor: pointer;
}

.stButton>button:hover {
    background-color: white;
    color: black;
    border: 2px solid #4CAF50;
}