button.css

.go-top-btn {
    position: fixed;
    bottom: 40px;
    right: 40px;
    cursor: pointer;
    height: 30px;
    width: 30px;
    justify-content: center; 
    display: none; 
    align-items: center; 
    border-radius: 100%; /* Makes the button circular */
}

.go-top-btn img {
    width: 55px;
    height: 55px;
    border-radius: 50%; /* Makes the image circular */
}