@media(max-width:1499px){
div#sidebar-1 {
    width: 100%;
    max-width: 100% !important;
    flex: 0 0 100%;
}
}
@media(min-width:1500px) and (max-width:1700px){
   ul#optionsmenu2 {
       display: none;
   } 
}
@media (max-width:990px){
   ul#optionsmenu2 {
       display: none;
   } 
}