How can I make a menubar fixed on the top while scrolling

问题

I'd like to make a menubar, which is fixed on the top of the page while scrolling. Something like the top menu in Facebook.

Also, I want a div holding the logo float at the left of menubar, and a nav float at the right of the menubar.

回答1:

This should get you started

 <div class="menuBar">
        <img class="logo" src="logo.jpg"/>
        <div class="nav"> 
            <ul>
                <li>Menu1</li>
                <li>Menu 2</li>
                <li>Menu 3</li>
            </ul> 
        </div>
    </div>



body{
    margin-top:50px;}
.menuBar{
    width:100%;
    height:50px;
    display:block;
    position:absolute;
    top:0;
    left:0;
    }
.logo{
    float:left;
    }
.nav{
    float:right;
    margin-right:10px;}
.nav ul li{
    list-style:none;
    float:left;
    }

回答2:

 #header {
        top:0;
        width:100%;
        position:fixed;
        background-color:#FFF;
    }

    #content {
        position:static;
        margin-top:100px;
    }

回答3:

to set a div at position fixed you can use

position:fixed
top:0;
left:0;
width:100%;
height:50px; /* change me */

回答4:

The postition:absolute; tag positions the element relative to it's immediate parent. I noticed that even in the examples, there isn't room for scrolling, and when i tried it out, it didn't work. Therefore, to pull off the facebook floating menu, the position:fixed; tag should be used instead. It displaces/keeps the element at the given/specified location, and the rest of the page can scroll smoothly - even with the responsive ones.

Please see CSS postion attribute documentation when you can :)

来源：https://stackoverflow.com/questions/8449272/how-can-i-make-a-menubar-fixed-on-the-top-while-scrolling

标签

html

css

menubar

css-position