@media(max-width: 500px){
   .header_verh{
   	flex-direction: column;
   }
   .entrance{
   	width: 28%;
   }
   .registration{
   	width: 45%;
   }
   .p{
   	margin-block-end: 0em;
   }
   
}
@media(max-width: 500px){
	.div_nav-menu{
		flex-direction: column;
	}
	.menu{
   	flex-direction: row;
   	padding: 5px 10px;
   }
   
}
@media(max-width: 260px){
   .sidebar-menu{
      width: calc(100% - 15px);
   }
}