How can I make my sidebar as long as my content?

Check out my website at:

I'm trying to make the sidebar on my site go all the way down to the footer, or be the same length as my content. I don't want to use JQuery or any other plugins for this. I believe it should be a simple CSS fix, but I'm drawing a blank on how to do it.


   <div id = "wrapper">
   <header id="name" align="center">MY IS117 Website</header>
   <div id="primary_links" align="center">
      <ul>
         <li><a href="#">Menu 1</a></li>
         <li><a href="#">Menu 2</a></li>
         <li><a href="#">Menu 3</a></li>
         <li><a href="#">Menu 4</a></li>
         <li><a href="#">Menu 5</a></li>
      </ul>
   </div>
   <div id="content">
      <h1>Heading 1</h1>
      <h2>Heading 2</h2>
      <h3>Heading 3</h3>
      <h4>Heading 4</h4>
      <h5>Heading 5</h5>
      <h6>Heading 6</h6>
      <p>
         Lorem ipsum dolor sit amet, consectetur adipiscing elit.....
      </p>
      <p>
         Aenean fringilla sed urna a ultrices. Aliquam non augue in libero venenatis sodales...
      </p>
      ...
   </div>
   <!-- content -->
   <div id="sidebar">
      <div id="secondary_links">
         <ul>
            <li><a href="#">Menu 1</a></li>
            <li><a href="#">Menu 2</a></li>
            <li><a href="#">Menu 3</a></li>
            <li><a href="#">Menu 4</a></li>
            <li><a href="#">Menu 5</a></li>
         </ul>
      </div>
   </div>
   <div id="footer">Footer</div>
</div>
<!-- wrapper -->

CSS

#header {
    background-color: cyan;
    width: 100px;
    height: 100px;
    padding: 20px;
    margin: 30px;
    border: 5px solid;
}

#name {
    border: 1px solid;
    padding-left: 31px;
    padding-right: 31px;
    margin-left: auto;
    margin-right: auto;
}

#wrapper {
    width: 898px;
    margin-left: auto;
    margin-right: auto;
}

#primary_links li {
    display: inline;
}

#primary_links {
    height: 75px;
    line-height: 75px;
    border: 1px solid;
}

#primary_links a {
    color: black;
}

#secondary_links ul, #primary_links ul {
    margin: 0px;
    padding: 0px;
}

#secondary_links li {
    list-style: none;
 /* gets rid of bullets */;
}

#sidebar {
    width: 338px;
    float: left;
    border: 1px solid;
}

#secondary_links {
    /*width:340px; temporary    
    float:right;  put in own div fiix prob*/;
}

#footer {
    /*margin-left:508px;
    margin-right:230px;*/
    clear: both;
    background-color: green;
}

#content {
    width: 508px;
    padding-left: 23px;
    padding-right: 23px;
    border: 1px solid;
    float: left;
}

Answer №1

Would you like your sidebar positioned to the right, matching the height of your content? If so, simply apply a float: right; style to your #sidebar. Place both your content and sidebar within a new div container, giving it a class such as .wrapper, and set a background image for the .wrapper. As the height changes, the background will adjust accordingly while repeating seamlessly.

.wrapper {
width: 100%;
background: url('yourimage') repeat;
/* float: left; */
overflow: hidden;
}

I hope this explanation clarifies things for you. I am more than willing to provide an example if needed.

UPDATE: To ensure the parent div encompasses the height of its children, you can utilize either float: left; or overflow: hidden;.

Answer №2

To organize the layout, create a new wrapper div named #content-sidebar-wrap around both #content and #sidebar. Set display:table for #content-sidebar-wrap, and for #content and #sidebar, add display:table-cell.

#content-sidebar-wrap {
    display: table;
    height: 100%;
}

#content {
    width: 508px;
    padding-left: 23px;
    padding-right: 23px;
    border: 1px solid;
    float: left;
    display: table-cell;
}

#sidebar {
    width: 338px;
    float: left;
    border: 1px solid;
    height: 100%;
    display: table-cell;
}

Preview the changes here: http://jsfiddle.net/LHX9Z/

Answer №3

Here are some CSS tips:

  1. To clear the float for #sidebar, use: clear: right;
  2. To clear the float for #footer, use: clear: both;

Ensure your footer goes to the bottom and sidebar floats to the right with these settings.

Answer №4

To ensure proper functionality, a simple method is to include a substantial amount of padding-bottom to the .sidebar class, and then offset it with an equal (but negative) margin-bottom. It is essential to apply overflow:hidden to the parent class. It would be beneficial to relocate both the header and footer elements outside of the wrapper.

JSFIDDLE LINK

Answer №5

give this a shot now

#wrapper {
background: #B3D4FC;
margin-left: auto;
margin-right: auto;
width: 898px;
}
#primary_links {
background: #FFFFFF;
border: 1px solid;
height: 75px;
line-height: 75px;
}

#name {
background: #FFFFFF;
border: 1px solid;
margin: 0 auto;
padding: 0 31px;
}

#sidebar {
background-color: #ADD8E6;
border: 1px solid;
float: right;
width: 290px;
}

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