Problem with bootstrap row height being set to 100%

I am currently immersed in a project utilizing the Twitter Bootstrap 3 framework.

Here is the basic structure of my HTML layout:

  • Sidebar
  • Main content

The sidebar element has a height set to 100% and a float: left property so that the div with the class main-content remains aligned horizontally.

However, upon applying the float left property to the sidebar and adding a row classed div within the main-content div, I encountered an unexpected increase in the height of the .row.

Instead of using float: left, if I opt for position: fixed on the sidebar, the height of the .row adjusts itself based on the content inside it.

Upon inspecting the elements using Chrome's web console, I observed the creation of two pseudo elements on the row - :before and :after.

Note that unchecking the CSS properties of these pseudo classes resulted in the .row height aligning correctly with its child elements.

What causes this issue when I apply float: left to the sidebar?

How can I resolve this dilemma?

While researching online, I came across this, but unfortunately, it did not offer a solution.

To better illustrate the peculiar behavior of the .row div excessively extending in height without any content present, I have created a fiddle.

I seek guidance and assistance in clarifying and rectifying this issue. Your help is greatly appreciated.

Thank you in advance.

EDIT : Why does the height of the .row div become 100% even when its height is undefined?

htmlcsstwitter-bootstrap

Answer №1

It seems that your approach to mark-up is a bit unconventional, especially when working with Bootstrap. Utilizing Bootstrap's functionality can help you create a sidebar and main content div more efficiently, while also avoiding the issue of unwanted "100% height divs".

Check out an example here: http://jsfiddle.net/GeA7N/3/

<div class="page-container">
    <div class="row">
        <div class="sidebar col-xs-4">
        </div>
        <div class="main-content col-xs-8">
            <div class="well custom-well"></div>
            <div style="background: red">Content div that is not 100% height by default</div>
        </div>
    </div>
</div>

Answer №2

Have you experimented with utilizing as a resource for designing layouts? No need to create an account to access it. After arranging the columns accurately, you can adjust their height by adding the style attribute to the div element. Hopefully, this tip proves useful to you.

Answer №3

Offspring inherent qualities from their parents, unless specifically stated otherwise.

Therefore, let's explicitly define a height for the row so it no longer relies on inheritance.

All I am doing is introducing a new row height attribute to override the existing parent's height attribute.

.row {
    background-color:blue;
    height:50%;
}

JSFiddle Demo The color blue represents the row div, while grey illustrates the underlying background of the page.

Answer №4

UPDATE : Can someone explain why the height of the .row element is automatically set to 100% without specifying its height?

Cause: The ::before and ::after pseudo-elements within the .row class are styled with display:table;, causing the first row to expand to fill available space.

Resolution: To prevent conflicts with Bootstrap, wrap your .container class in a new div styled with display:flex;

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