Ways to change specific CSS class properties in a unique style

As a Java programmer using primefaces 5.1, I've encountered some challenges with handling CSS classes. One particular issue I'm facing is the need to override certain CSS properties to remove the rounded corners of a DIV element. The rendered code looks like this:

<div style="position: absolute; margin: 0px; top: auto; width: auto; z-index: 0; bottom: 0px; left: 0px; right: 0px; display: block; visibility: visible; height: 16px;" id="j_idt28" class="ui-layout-unit ui-widget ui-widget-content ui-corner-all ui-layout-south footer ui-layout-pane ui-layout-pane-south">
    <div style="position: relative; visibility: visible; height: 15px;" class="ui-layout-unit-content ui-widget-content">
    <span style="color:#000000;background-color:#FFFF00;font-size:small;">This is a text inside a div!</span>
    </div>
</div>

It's important to note that the upper DIV utilizes several CSS classes, including my custom class named footer. In my CSS file, I have defined this class as:

.footer .ui-layout-unit-content {
background-color: #FFFF00 !important;
padding: 0px !important;
border-radius: 0px;
}

While I was able to change the background color to yellow, I couldn't overwrite other properties successfully. Can you help me identify what I might be doing incorrectly?

htmlcssprimefaces

Answer №1

To effectively override a previously defined rule, it is essential to enhance the specificity of your new rule.

Specificity plays a vital role in helping browsers determine the most relevant property values for an element and apply them accordingly. The specificity is determined based on the different types of selectors used in the matching rules.

How is specificity calculated?

Specificity is calculated by counting each type of selector and concatenating them together. It does not act as a weight assigned to the corresponding matching expression.

In cases where specificity levels are equal, the style declared last in the CSS will take precedence over others.

Therefore, a sample rule could be formulated as follows:

.footer.ui-layout-pane .ui-layout-unit-content.ui-widget-content {
    background-color: #FFFF00 !important;
    padding: 0px !important;
    border-radius: 0px;
}

For more information, please visit: MDN

Answer №2

Thanks to Emmanuel's assistance, I was able to find a simple solution: there was another class in the CSS code that was affecting the appearance of the rounded DIV element, so I decided to override it with the following:

.footer.ui-layout-pane .ui-layout-unit-content.ui-widget-content {
    background-color: #FFFF00;
    padding: 0px;
}

.footer.ui-corner-all {
    border-radius: 0px;
    border-bottom-left-radius: 0px;
    border-bottom-right-radius: 0px;
    border-top-left-radius: 0px;
    border-top-right-radius: 0px;
}

.footer.ui-widget-content {
    background-color: #FFFF00;
    padding: 0px;
}

Answer №3

To identify the applied style class, utilize your element inspector and then override it by employing the !important rule. One instance is: border-radius: 0px !important;

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