#scrollToTopBtn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background-color: #43A047;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
    z-index: 9999;
    transition: all 0.3s ease;
    color: #fff;
    border: 0;
    padding-bottom: 5px;
}

    #scrollToTopBtn:hover {
        background-color: #333;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
        transform: translateY(-3px);
    }

    #scrollToTopBtn:active {
        transform: translateY(-1px);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    }

/* For better visibility on different backgrounds */
@media (prefers-color-scheme: dark) {
    #scrollToTopBtn {
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    }
}