Question

I have an unordered list (<ul>) with various number of items (<li>) in it. I want to use one CSS styling that allows the items to stretch to the width of the list.

This is what I have:

This is what I want:

HTML:

These 4 items should fill the width:<br/>
<ul id="ul1">
    <li>item</li>
    <li>item</li>
    <li>item</li>
    <li>item</li>
</ul>
<br/>
These 5 items should fill the width:<br/>
<ul id="ul2">
    <li>item</li>
    <li>item</li>
    <li>item</li>
    <li>item</li>
    <li>item</li>
</ul>
<br/>
And so on and so forth...

Here is the JSFiddle to get you started.

Note: I don’t want to hard-code the width in CSS.
Note: If you are wondering about the use-case, this is a navigation structure in a responsive design and I want the list items to always fill up the available width no matter what is the resolution.

Answer 1

Demo
HI now you can do this

Used to display :table and display:table-cell

as like this

Css

ul {
    border:1px dotted black;
    padding: 0;
    display:table;
    width:100%;
    box-sizing:border-box;
    -moz-box-sizing:border-box;
    -webkit-box-sizing:border-box;
}
li {
    background-color: red;
    display:table-cell;
}
li:nth-child(2n) {
    background-color: #0F0;
}

Now define your parent display:table; or width:100%; and define your child display:table-cell;

Demo