The clear property indicates that the left, right or both sides of an element can not be adjacent to earlier floated elements within the same block formatting context.
Cleared elements are pushed below the corresponding floated elements. Just try to remove clear: This is useless empty div in terms of bad structure and semantic, this also makes your code not flexible. In some browsers this div causes additional height and you have to add height: But real troubles begin when you want to add background or border around your floated elements - it just will collapse because web was designed badly.
I do recommend to wrap floated elements into container which has clearfix CSS rule.
This is hack as well, but beautiful, more flexible to use and readable for human and SEO robots. When you want one element placed at the bottom other element you use this code in CSS. It is used for floats. If you float content you can float left or right To ensure the footer stays below both of these floats if you have floated left and right then you put the footer as clear: Thank you for your interest in this question.
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CSS Layout - float and clear
Would you like to answer one of these unanswered questions instead? What does the following CSS rule do: Peter Mortensen 13k 19 83 When you are using CSS float and want next element below, not on right or left. No floating elements allowed on the left and the right side of a specified element when the element is used with clear: Why do they float elements?
Alien k 26 If you have never heard about floats, I suggest you first read an introduction to floats for example, see the link in the next answer. Then come back and read this answer - it will make sense. Take note, floats were not originally invented to have two block level elements side by side, that's merely the side effect!
The original purpose was to allow text to flow around images inline, so you floated the images in either direction. Related short answer to refer before reading this, just to get a general idea.. Alien Nov 5 '13 at Means that no floating elements are allowed on the left side of the div:. If an element is taller than the element containing it, and it is floated, it will "overflow" outside of its container:.
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Then we can add overflow: The new, modern clearfix hack however, is safer to use, and the following code is used for most webpages:. You will learn more about the:: With the float property, it is easy to float boxes of content side by side:. You can easily create three floating boxes side by side. However, when you add something that enlarges the width of each box e.
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The box-sizing property allows us to include the padding and border in the box's total width and height , making sure that the padding stays inside of the box and that it does not break. In the previous example, you learned how to float boxes side by side with an equal width. However, it is not easy to create floating boxes with equal heights. A quick fix however, is to set a fixed height, like in the example below:. However , this is not very flexible. It is ok if you can guarantee that the boxes will always have the same amount of content in them.
But many times, the content is not the same. If you try the example above on a mobile phone, you will see that the second box's content will be displayed outside of the box. This is where CSS3 Flexbox comes in handy - as it can automatically stretch boxes to be as long as the longest box:.
Why do they float elements?
The only problem with Flexbox is that it does not work in Internet Explorer 10 or earlier versions. Use float with a list of hyperlinks to create a horizontal menu:. That doesn't happen, though. The container div itself has no height, since it only contains floating elements.
Therefore the border stubbornly stays at the top of the floating columns. The old solution to this problem required you to add an extra element with clear: Once it was in place the container contained a non-floating element, which means it stretches itself up to accomodate it:. This can be done either by adding the extra element in the HTML source code as the example above does or by using the: Since Explorer Win and Mac doesn't support: In any case, adding an HTML element for presentation's sake is something we've learned to avoid.
Unfortunately the problem could not be solved in any other way, until now.
Related Clear Left! Clear Right!
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