Controlling spacing with themes

The space between accordion sections is controlled by the CSS theme framework. In particular, the visual structure for the accordion is defined by a set of CSS rules that can be modified to control the spacing between accordion sections. We could override the accordion theme CSS to adjust for more or less spacing between sections.

How to do it...

We're going to supply an additional CSS module to our UI—one that overrides the accordion structure supplied in the theme we happen to be using. There's no need to fret, however, our change is a simple one. We're going to update the margin-top property. In a new CSS file called theme.accordion.css, let's add the following style rules:

.ui-accordion .ui-accordion-header {
    margin-top: 4px;
}

Now that we have the CSS, we need to include it in our HTML header. It should look something like this:

How it works...

We're copying the same CSS selector as is found in any jQuery UI theme. The particular property we've just changed alters the space between the accordion sections. Since we're overriding the default theme value, it's important to include our CSS files after the default theme file. This allows us to override the default theme instead of the default theme overriding our modifications.