body {
    font-family: Arial, sans-serif;
}

.up-arrow {
    display: none; /* Hide by default */
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%); 
    padding: 10px;
   : center;
    text-decoration: none;
}

.up-arrow img {
    width: 40px; /* Default width */
    height: 40px; /* Default height */
    opacity: 0.5; /* 50% transparent */
}

.up-arrow:hover {
    background-color: rgba(0, 0, 0, 0.2);
}

/* Media query for mobile devices */
@media (max-width: 768px) {
    .up-arrow {
        display: block; /* Show on mobile devices */
    }

    .up-arrow img {
        width: 30px; /* Smaller width for mobile */
        height: 30px; /* Smaller height for mobile */
    }
}

/* Media query for larger screens */
@media (min-width: 769px) {
    .up-arrow img {
        width: 50px; /* Larger width for larger screens */
        height: 50px; /* Larger height for larger screens */
    }
}