Hiding Content Responsibly

There are many ways to hide elements in CSS. This article will discuss several common and practical methods and analyze their applicable scenarios. Although there are many methods, each method has its logic and applicability.

First, if you need to completely hide elements and are not visible to all users (including screen reader users), you can use display: none; .

Second, if you need to hide elements only from the screen reader and remain visually visible (e.g., a meaningless icon near the auxiliary tag), you can use aria-hidden="true" attribute.

If you need to visually hide elements but remain visible to the screen reader (for example, content of inactive tags), you can use .sr-only class. This class is visually hidden, but the screen reader is still accessible.

If you need to visually hide elements but keep their placement space (for example, load animated icons on buttons), you can use transform: scale(0); . This method visually hides elements, but retains their original space, which is still accessible to the screen reader. In addition, transform property can be combined with the transition property to achieve animation effects.

If you need to have a gradual effect, you can use the opacity attribute, which itself has a transition effect. In order to avoid screen readers also reading elements of fading, you can use it in combination with the visibility attribute: use visibility: hidden; when fading, and use visibility: visible; when fading.

In short, the above methods can meet the needs of most CSS hidden elements.

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