问网站菜单，位置固定，在9中未显示

EN

<img class="menuknop" src="img/menuknop.png" alt="Menu button"/>
<ul class="menu">
<li data-menuanchor="Home" class="active"><a href=#Home>Home</a></li>
<li data-menuanchor="About"><a href=#About>About</a></li>
<li data-menuanchor="Concerts"><a href=#Concerts>Concerts</a></li>
<li data-menuanchor="Media"><a href=#Media>Media</a></li>
<li data-menuanchor="Contact"><a href=#Contact>Contact</a></li>
</ul>

.menuknop{
position: fixed;
top: 1%;
left:1%;
width: 50px;
height: auto;
}

.menu{
 position:fixed;
top:1.5%;
left: 80px;
height: 50px;
width: 100%;
padding: 0;
margin:0;
font-size: 1em;
overflow:hidden;
}
.menu li {
    display:inline-block;
    margin: 0px;
    color: #000;
    background:#fff;
    background: rgba(255,255,255, 0.5);
    -webkit-border-radius: 10px; 
            border-radius: 10px; 
}
.menu li.active{
    background:#666;
    background: rgba(0,0,0, 0.5);
    color: #fff;
}
.menu li a{
    text-decoration:none;
    color: #000;
}
.menu li.active a:hover{
    color: #000;
}
.menu li:hover{
    background: rgba(255,255,255, 0.8);
}
.menu li a,
.menu li.active a{
    padding: 9px 18px;
    display:block;
}
.menu li.active a{
    color: #fff;
}