How do I justify a horizontal list?

问题:

I have a horizontal navbar like the following:

<ul id = "Navigation">
    <li><a href = "About.html">About</a></li>
    <li><a href = "Contact.html">Contact</a></li>
    <!-- ... -->
</ul>

I use CSS to remove the bullet points and make it horizontal.

#Navigation li
{
    list-style-type: none;
    display: inline;
}

I'm trying to justify the text so each link is spread out evenly to fill up the entirety of the ul's space. I tried adding text: justify to both the li and ul selectors, but they're still left-aligned.

#Navigation
{
    text-align: justify;
}

#Navigation li
{
    list-style-type: none;
    display: inline;
    text-align: justify;
}

This is strange, because if I use text-align: right, it behaves as expected.

How do I spread out the links evenly?

回答1:

Modern Approach - CSS3 Flexboxes

Now that we have CSS3 flexboxes, you no longer need to resort to tricks and workarounds in order to make this work. Fortunately, browser support has come a long way, and most of us can start using flexboxes.

Just set the parent element's display to flex and then change the justify-content property to either space-between or space-around in order to add space between/around the children flexbox items. Then add additional vendor prefixes for more browser support.

Using justify-content: space-between - (example here):

ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.menu {
    display: flex;
    justify-content: space-between;
}

<ul class="menu">
    <li>About</li>
    <li>Contact</li>
    <li>Contact Longer Link</li>
    <li>Contact</li>
</ul>

---

Using justify-content: space-around - (example here):

ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.menu {
    display: flex;
    justify-content: space-around;
}

<ul class="menu">
    <li>About</li>
    <li>Contact</li>
    <li>Contact Longer Link</li>
    <li>Contact</li>
</ul>

回答2:

You need to use a "trick" to make this work.

See: http://jsfiddle.net/2kRJv/

HTML:

<ul id="Navigation">
    <li><a href="About.html">About</a></li>
    <li><a href="Contact.html">Contact</a></li>
    <!-- ... -->
    <li class="stretch"></li>
</ul>

CSS:

#Navigation
{
    list-style-type: none;
    text-align: justify;
    height: 21px;
    background: #ccc
}

#Navigation li
{
    display: inline
}
#Navigation .stretch {
    display: inline-block;
    width: 100%;

    /* if you need IE6/7 support */
    *display: inline;
    zoom: 1
}

Details on IE6/7 trickery: Inline block doesn't work in internet explorer 7, 6

回答3:

This can also be achieved using a pseudo element on the ul element:

ul {
    margin: 0;
    padding: 0;
    list-style-type: none;
    text-align: justify;
}

ul:after {
    content: "";
    width: 100%;
    display: inline-block;
}

li {
    display: inline;
}

回答4:

This might suit your needs:

#Navigation{
}
#Navigation li{
    list-style-type: none;
    text-align: center;
    float: left;
    width: 50%; /*if 2 <li> elements, 25% if 4...*/
}

demo : http://jsfiddle.net/KmqzQ/

回答5:

Just do:

ul { width:100%; }
ul li {
  display:table-cell;
  width:1%;
}

回答6:

HTML

<ul id="Navigation">
    <li><a href="#">The Missing Link</a></li>
    <li><a href="#">About</a></li>
    <li><a href="#">Riluri</a></li>
    <li><a href="#">Contact us</a></li>
    <!-- ... -->
    <li class="stretch"></li>
</ul>

CSS

#Navigation {
    list-style-type: none;
    text-align: justify;
    height: 21px;
    background: #ccc
}

#Navigation li{
    display: inline
}

#Navigation li a {
    text-align: left;
    display:inline-block;
}

#Navigation .stretch {
    display: inline-block;
    width: 100%;

    /* if you need IE6/7 support */
    *display: inline;
    zoom: 1
}

View demo: http://jsfiddle.net/2kRJv/392/

回答7:

You need to have the <li> elements separated, otherwise the justify won't work.

For example, this:

<ul><li>test</li><li>test</li></ul>


needs to be like this:
<ul>
<li>test</li>
<li>test</li>
</ul>

or at least have spaces between the opening and closing <li> tags.

回答8:

This blog has a satisfyingly robust solution. It needs some slight changes to accommodate a ul/li navigation, though:

#Navigation {
    width: 100%;
    padding: 0;
    text-align: justify;
    font-size: 0;
    font-size: 12px\9; /* IE 6-9 */
}
#Navigation>li {
    font-size: 12px;
    text-align: center;
    display: inline-block;
    zoom: 1;
    *display: inline; /* IE only */
}
#Navigation:after {
    content:"";
    width: 100%;
    display: inline-block;
    zoom: 1;
    *display: inline;
}

http://jsfiddle.net/mblase75/9vNBs/

回答9:

The marked answer does not work if has a white space in it.

The top answer here works with white spaces How do I *really* justify a horizontal menu in HTML+CSS?