How to make the float left and float right on the same line?

问题

The Problem:

     **The left part** (#nav ul li) which float: left
     and **the right part** (#nav .search) which float: right
            **are not in a line**.

it should be like this:

but mine:

The HTML:

<div id="nav">
   <ul>
     <li><a href="#">Home</a></li>
     <li><a href="#">Portfolio</a></li>
     <li><a href="#">Blog</a></li>
     <li><a href="#">Contact</a></li>
   </ul>
   <div class="search">
     <input type="text" name="search" id="search" value="search">
   </div>

The CSS:

#nav ul li{
float: left;
list-style: none;
margin: 0 20px;
}

#nav .search{
float: right;
}

My Solutions:

Solution 1: Use bootsrap to build layout instead of doing it on my own, i use it on the footer, and it's perfectly on the same line! Yet I still don't know how it works

Solution 2: I use margin-top: -20px to pull the search box up, but I don't think it is a good practice.

Any one can help? Many thanks!

回答1:

The reason it doesn’t work as expected is that the <ul> on the left is expanding out to the right, thus pushing the content down. The solution might be to set an explicit fixed width for the left and right areas which is what I have done when I have faced this scenario in the past. But will say that a mix of floats and even absolute positioning is what will ultimately work.

回答2:

An alternative to the solutions already mentioned is to flip the order of the markup around, so that the right-floating item comes first.

#nav ul li {
  float: left;
  list-style: none;
  margin: 0 20px;
}
#nav .search {
  float: right;
}

<div id="nav">
   <div class="search">
     <input type="text" name="search" id="search" value="search">
   </div>       
   <ul>
     <li><a href="#">Home</a></li>
     <li><a href="#">Portfolio</a></li>
     <li><a href="#">Blog</a></li>
     <li><a href="#">Contact</a></li>
   </ul>
</div>

You don't have to do anything else. No other CSS or markup is needed.

回答3:

You have to use absolute positioning and use left and right alignment.

#nav ul, #nav .search {
    margin: 5px;
    position: absolute;
    display: inline-block;
}

Check here http://jsfiddle.net/A8SyJ

回答4:

Have you tried adding the search as another list item within your nav and floating that to the right?

<li class="search"><input type="text" name="search" id="search" value="search"></li>

See the example below:

http://jsfiddle.net/teWP5/

回答5:

You can use float:left for the ul and float: right with the search box

来源：https://stackoverflow.com/questions/14471662/how-to-make-the-float-left-and-float-right-on-the-same-line

标签

html

css

css-float