html {
    scroll-behavior: smooth;
}
i.scrollToTop {
    border: solid white;
    border-width: 0 3px 3px 0;
    display: inline-block;
    padding: 3px;
    transform: rotate(-135deg);
    -webkit-transform: rotate(-135deg);
}
#scrollToTopBtn {
    display: none;
    position: fixed; 
    bottom: 20px; 
    right: 30px; 
    z-index: 99; 
    background-color: #b82300;
    color: white; 
    cursor: pointer; 
    padding: 10px 16px;
}
  
#scrollToTopBtn:hover {
    background-color: #e12b00;
}