Using clearfix on every div element is essential to avoid container collapsing

Would it be beneficial to include clearfix in every div element to avoid container collapse issues?

Or is it more practical to apply it only to specific classes, like so?

<div class="container">
   Additional div elements...
</div>

.container::after {
 clear: both;
 content: "";
 display: table;
}

Answer №1

The necessity of a clearfix arises when the child elements are employing floats, preventing any collapsing issues. If there are no floated child elements, then using a clearfix is unnecessary.

.clearfix::after{
content:"";
display:table;
width:100%;
clear:both;
}

Answer №2

According to @Chandra Shekar, it is recommended to only use the clearfix hack when utilizing floats. However, there is a crucial detail to consider if you decide to implement it:

In the CSS rule provided, the code reads: content: “”; These are typographical quotes that may not function as intended. It is advised to switch them to regular quotes, such as content: "";, or even single (non-typographical) quotes like content: '';

Answer №3

In my humble opinion, I strongly believe that the idea is not favorable for a variety of reasons:

  1. Utilizing clearfix as a method is considered a hack. Initially designed to address issues stemming from using floats as a primary block layout tool—a practice they were never originally intended for (along with tables!). When floats are used for their intended purposes (like incorporating illustrations or tables within lengthy texts), the overlap between blocks (both inward and outward) serves as a beneficial feature rather than a flaw. Indiscriminately clearing everything might result in unattractive gaps within the document, causing text to no longer elegantly flow around floats.
  2. Clearfixes introduce pseudo elements into blocks. These zero-sized, invisible elements play a crucial role when employing the hack for its original purpose (containing nested floats and children's margins). However, complications arise in other scenarios. For instance, transforming such a block into a Flexbox container and applying justify-content:space-between could lead to unwanted spacing at the container's end. This occurs because the pseudo element morphs into a flex element adhering to Flexbox rules, thereby impacting the positioning of other elements. The same issue arises with Grid layout systems.
  3. Clearfix hacks reliant on the clear property prove less than ideal even for float containment! 'Clearfixed' blocks remain within the same block formatting context (BFC) as neighboring elements, potentially being influenced by other floats within the document (e.g., a preceding floated column). A more reliable alternative for containing floats involves creating a new BFC (often through overflow:hidden, although various alternatives exist, each carrying their own advantages and drawbacks). It is generally recommended to explore this Codepen demo comparing the effects of different strategies addressing float containment problems: https://codepen.io/SelenIT/details/qrORXm/.

Personally, I advocate against relying on floats for layouts altogether, thereby eliminating the necessity for 'clearfixing'. Flexbox offers a vast array of layout possibilities far surpassing what floats can achieve, and current browser support for it has significantly improved. Reserve the use of clearfixes as a fallback solution, only if all other avenues fail to resolve the specific layout dilemma at hand.

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