@media (max-width: 980px){
a.sticky.main-btn {
        display: none;
    }
   div#book{
    margin-top:30px;
   }
}
@media (max-width: 540px){
#book .side-area .form-info h4{
    font-size: var(--f24);
}  
    footer .copyright {
        padding-bottom: 12px;
    }
}