Overflow of sidebar with Twitter Bootstrap Affix

affix, css-position, sticky, twitter-bootstrap

Solution

From the Bootstrap docs (http://getbootstrap.com/2.3.2/javascript.html#affix)..

Heads up! You must manage the position of a pinned element and the behavior of its immediate parent. Position is controlled by affix, affix-top, and affix-bottom. Remember to check for a potentially collapsed parent when the affix kicks in as it's removing content from the normal flow of the page.

So you need some CSS for `affix` to set the width for the element when it becomes fixed. Such as:

#sidebar.affix {
    position: fixed;
    top: 0;
    width:225px;
  }

Demo on Bootply: http://bootply.com/73864

Related answers on Bootstrap affix: How to create a sticky left sidebar menu using bootstrap 3? Twitter-bootstrap 3 affixed sidebar overlapping content when window resized and also footer

Problem

I'm trying to use the affix plugin by twitter bootstrap but I can't figure out how to constrain it within the parent container, i've created the following example to show my problem: Problem demo: http://www.codeply.com/go/DvcRXkeFZa ``` <div class="container"> <div class="row"> <div class="col-md-3 column"> <ul id="sidebar" class="well nav nav-stacked" data-spy="affix" data-offset-top="130"> <li><a href="#software"><b>Software</b></a></li> <li><a href="#features">Features</a></li> <li><a href="#benefits">Benefits</a></li> <li><a href="#costs">Costs</a></li> </ul> </div> <div class="col-md-9 column"> <h1>Blah, blah, blah</h1> <hr> <a class="anchor3" id="top" name="software"></a> <p> content here that scrolls... </p> </div> </div> </div> ``` As you can see when you scroll it overflows out of the sidebar, it also doesn't affix to the bottom of the page when it reaches the bottom.

Original source

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