nav {
    top:0;
    left:0;
    position:fixed;
    width:100%;
    background-color:rbga(0,0,0,0.6);
      
}
nav ul {
    float:right;
    padding:0;
    margin:0;
    position:relative;
    list-style:none;
}
nav ul li{
    display: inline-block ;
    float:left;
    z-index:1;
}
nav a{
    display:block;
    padding:14px 5px;
    color: aqua;
    font-size:17px;
    font-weight:bold;
    text-decoration: none;
    font-family:Arial;
}
#logo{
    display:block;
    float:left;
}
nav a:hover{
    background-color:white;
    color:gray;
}
nav ul ul{
    display:none;
    position:absolute;
    top:48px;
}
nav ul ul:hover>ul{
    display:inherit;
}
nav ul ul li {
    float:none;
    display:list-item;
    position:relative;
    background-color:rgba(0,0,0,0.6);
    width:150px;
}
nav ul ul ul li {
    position:relative;
    left:150px;
    top:-48px;
}
/*.toggle, [id^=drop]{
    display:none;
}
@media all and (max-width=600px){
    .manu{
        display:none;
    }
    .toggle{
        display:block;
        background-color:rgba(0,0,0,0.6);
        color:white;
        text-decoration:none;
        padding:10px;
    }
    .toggle:hover{
        background-color:white;
        color:dimgray;
    }
    #logo{
        display:block;
        float:none;
    }
    [id^=drop]:checked+ul{
        display:block;
    }
    nav ul li{
        display:block;
        width:100%;
    }
    nav ul ul{
        float:none;
        position:static;
    }
    nav ul ul ul{
        float: none;
        position:absolute;
    }
}*/