Tips for creating a div element with a width that is close to 100%

I have a snippet of HTML code that looks like this:

<div id="outer">
    <div id="inner"></div>
</div>

Is there a way to adjust the #inner div so it takes up 100% width of #outer but with a 10px margin?

This is my current CSS styling:

#outer {
    width: 100%;
    max-width: 500px;
}

Answer №1

To create some space around an element, apply a margin-left and/or a margin-right of 10px:

#inner {
    margin: 0 10px;
}

Check out this example for more clarity: http://jsfiddle.net/xrmAE/1/

If needed, adjust the value from 10px to 5px.

Answer №2

IMPORTANT

Check out ThirtyDot's response for a solution that does not affect the overall width of the outer element:

How to achieve almost 100% div width

The following code will result in the total width of the outer element being the sum of the width and the padding on the left and right sides, which is not what the question is asking for. Apologies for any confusion caused. :)


To have the #inner element be 10px less in total, you can add a left and right padding of 5px:

<div id="outer">
    <div id="inner"></div>
</div>

#outer {
  width: 500px;
  height: 500px;
  background: red;
  padding: 2px 5px;
}
#inner {
  width: 100%;
  height: 500px;
  background: blue;
}

http://jsfiddle.net/ZtaCM/

UPDATE

If you consider the use of the max-width property, see the following demonstration:

<div id="test">
    <div id="outer">
        <div id="inner"></div>
    </div>
</div>
<p>
    <input type="button" onclick="changeWidth('400px')" value="Change to 400px"/>
    <input type="button" onclick="changeWidth('500px')" value="Change to 500px"/>
    <input type="button" onclick="changeWidth('600px')" value="Change to 600px"/>
</p>

#outer {
  width: 100%;
  max-width: 500px;
  background: red;
  padding: 2px 5px;
}
#inner {
  width: 100%;
  height: 200px;
  background: blue;
}
#test {
  background: yellow;
  width: 600px;
}

function changeWidth(width) {
    document.getElementById('test').style.width = width;
}

http://jsfiddle.net/ZtaCM/1/

Answer №3

How do you feel about setting the padding to 10px for the element with ID #outer?

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