<div id="SideBar" class="sidebar mainbar">
Recently, I came across this code snippet in a .aspx file. Is this code valid? Can anyone guide me on understanding its functionality? I assume it is valid, but I am unable to locate it in the CSS file. While I found sidebar defined as a class, mainbar seems to be missing.
Thank you in advance,
Randy
Containing only two classes, this div is able to inherit properties from both .sidebar and .mainbar.
Absolutely, you are able to assign multiple css classes to an element as needed. If the specified classes do not appear in the CSS files, it could be due to either:
In certain cases, the mainbar may not appear in your CSS file if developers have assigned classes to elements and are referencing those classes in javascript.
Absolutely, it is completely valid for an element to be styled by multiple classes.
For more information on this topic, you can check out this informative guide as well as this resource which discusses the precedence of duplicate style attributes in CSS.
CSS Tricks offers some interesting CSS tips, one of which involves utilizing two classes simultaneously.
Here is a snippet of the trick from the mentioned website:
Typically, only one class is assigned to attributes, but this does not limit you to just one. In fact, you have the flexibility to assign multiple classes!
By combining these two classes (separated by a space, not a comma), the paragraph will inherit the styling rules from both classes. If there are conflicting rules between the two classes, the one lower in the CSS hierarchy will take precedence.
Be cautious of Internet Explorer 6 if you plan on styling an element using multiple classes, as it may not function as expected.
You shouldn't encounter issues with combining an id and class (e.g., #anid.class), or using two separate selectors like .classA followed by .classB, but avoid using .classA.classB.
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