.menu_button{display:none;}
nav.menu_mobile_only{width:100%;}
.menu_button{
	position:absolute;top:0;
	font-size: 50px; 
	height:70px;width:70px;
	text-align:center;
	cursor:pointer;
	color:#aaa;
	background-color:rgba(0,0,0,0.9);
	overflow:hidden;
}
.menu_unfolded{
	height:auto; 
	width:100%;
}
.menu_button li{list-style: none;font-size:25px;color:white!important;}
.menu_button li a{color:white!important;display:inline-block;padding:5px;width:100%}
.menu_button li:active{background-color:black;}
.menu_button li:hover{background-color:black;}
@media screen and (max-width:900px) {
	nav[role=navigation]{display:none;}
	.menu_button{display:block;}

}