Question

I have this HTML code:

<div id="logo">
    <div id="left-block">
        <h1>Title goes here</h1>
    </div>
</div>
<div id="right-block">
    <ul>
        <li>Menu1</li>
        <li>Menu2</li>
        <li>Menu3</li>
        <li>Menu4</li>
    </ul>
</div>

It shows a title at the top-left corner and a item menu at the top right using this CSS code:

#logo {
    position: absolute;
    z-index: 1;
}

#left-block {
    background-color: red;
    height: 50px;
}

#right-block {
    float: right;
    background-color: blue;
    height: 50px;
    z-index: 5;
}

ul {
    float: right;
    list-style: none;
}

li {
    display: inline;
    margin: 0 5px 0 0px;
}

The problem is when I have a long title as showed in this Fiddle example. The title overlaps the menu and z-index seems that is not working (I’ve put z-index everywhere without success). Why z-index is not working? Is because #logo is absolutely positioned? How to resolve this problem?

NOTE: I can’t change this (#logo {position:absolute}) because other elements not showed in this simplified demo needs it.

Answer 1

Just manually set the #right-block position :

#right-block {
    position: relative;
    float: right;
    background-color: blue;
    height: 50px;
    z-index: 5;
}

z-index only woks on absolute|relative|fixed positioned elements, and the default value is for position is static.