Clearfix css

The CSS clearfix is a popular and essential technique used in web development to manage and fix layout issues caused by floating elements. If you've ever worked with CSS layouts involving floats, you may have encountered situations where parent containers collapse or do not fully wrap around their child elements. This is where the clearfix technique becomes invaluable.Why Does This Happen?When you use floating elements (via the float property) within a container, those floated elements are essentially removed from the normal document flow. As a result, the height of the parent container might not expand to fully encompass its child elements. This can lead to layout breakages and unexpected visual results.For example, if a container has only floated child elements, it might collapse as if it has no content, which can disrupt surrounding elements in your design.The Role of ClearfixThe clearfix technique addresses this issue by ensuring that the parent container correctly wraps around its floated children. It achieves this by introducing a method to clear the floats and restore the natural flow of the layout.Advantages of Using ClearfixCleaner Layouts: Clearfix prevents the visual collapse of containers, maintaining a well-structured design.Ease of Maintenance: It simplifies debugging and reduces the need for manually adding clear elements in your HTML.Universal Compatibility: Clearfix is widely supported across modern and older browsers, making it a reliable solution.When Should You Use Clearfix?Whenever you use floating elements inside a container.When building grid systems or multi-column layouts that rely on floats.If you notice a container collapsing unexpectedly in your layout.Getting the CodeTo implement the clearfix technique in your projects, you can find the necessary code snippet and detailed instructions at CSS-Tricks.com. Their guide provides a robust and widely adopted solution to this common issue.

Tek-Tips is the largest IT community on the Internet today! Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet! Congratulations Chriss Miller on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go! Home Forums Software Programmers Web Development HTML, XHTML & CSS You are using an out of date browser. It may not display this or other websites correctly.You should upgrade or use an alternative browser. Clearfix Thread starter audiopro Start date Oct 27, 2008 Status Not open for further replies. #1 I have a clearfix which clears in FF but not IE6 on a validating page. I have had it the other way round but IE6 behaving itself is a little unusual.Any suggestions?Keith #2 Please post your code or an example #3 This is the clearfix code I've used personally for the last few years. I've found that other solutions don't always work for me (including the one-liners that revolve around 'overflow'): /* clearfix styles */.clearfix:after { clear: both; display: block; content: "."; height: 0px; visibility: hidden;}.clearfix { display: inline-block;}/* Hides from IE-mac \*/* html .clearfix { height: 1%;}.clearfix { display: block;}li.clearfix { display: list-item;}/* End hide from IE-mac */ I know this works in Fx2 & 3, IE 6 & 7, Opera, Chrome, Safari (3/Win, 3/Mac). I've not tested it in any other browsers.Hope this helps,DanCoedit Limited - Delivering standards compliant, accessible web solutionsDan's Page [blue]@[/blue] Code Couch: Code Couch Tech Snippets & Info: #4 I don't tend to need a clearfix of this nature very often, certainly not one that requires different version per browser.Generally I simply float the containing element.If I can't do that for some reason then I'll use something like: .clearer { clear:both;visibility:hidden; } I find that by applying that class to an element I retain the semantic structure of my document since it acts as a divider even if visible.--Tek-Tips Forums is Member Supported. Click Here to donate*:O)Tyres: Mine's a pint of the black stuff.Mike: You can't drink a pint of Bovril. Thread starter #5 I got to the bottom of it eventually and as usual I was missing the obvious, I had the clearfix set up in the wrong container so it was having no effect - duh!FoamcowI tried your suggestion and it worked, is that all that needs to be done, float the parent container? If so, it seems a much cleaner solution.Keith #6 Yep. If you float the container it will extend to wrap around floated content.There are times when it's not ideal though.When you float an element you will also collapse it's width to that of its contents. If you

CSS Layout - clear and clearfixThe clear PropertyWhen we use the float property, and we want the next element below (not on right or left), we will have to use the clear property.The clear property specifies what should happen with the element that is next to a floating element.The clear property can have one of the following values: none - The element is not pushed below left or right floated elements. This is default left - The element is pushed below left floated elements right - The element is pushed below right floated elements both - The element is pushed below both left and right floated elements inherit - The element inherits the clear value from its parentWhen clearing floats, you should match the clear to the float: If an element is floated to the left, then you should clear to the left. Your floated element will continue to float, but the cleared element will appear below it on the web page.ExampleThis example clears the float to the left. Here, it means that the element is pushed below the left floated element: div1 { float: left;}div2 { clear: left;}Try it Yourself »The clearfix HackIf a floated element is taller than the containing element, it will "overflow" outside of its container. We can then add a clearfix hack to solve this problem:Without ClearfixWith ClearfixThe overflow: auto clearfix works well as long as you are able to keep control of your margins and padding (else you might see scrollbars). The new, modern clearfix hack however, is safer to use, and the following code is used for most webpages:Example.clearfix::after { content: ""; clear: both; display: table;}Try it Yourself »You will learn more about the ::after pseudo-element in a later chapter.CSS Properties Property Description clear Specifies what should happen with the element that is next to a floating element float Specifies whether an element should float to the left, right, or not at all ★ +1 Track your progress - it's free!

--> CSS Clearfix清除浮动什么是ClearfixCSS Clearfix 是一种技术，确保容器正确包含和包括其中的浮动元素。它通过向容器添加一个空元素来防止布局问题，该空元素清除左右两侧的浮动，使得容器可以扩展并保持预期的布局。清除浮动有助于避免容器折叠、高度不一致、内容重叠、对齐不一致等问题。本章将探讨清除浮动技术如何确保容器元素正确包含其浮动子元素。CSS 清除浮动如上所述，CSS清除浮动修复了期望元素中的溢出元素。可以针对以下三个属性进行操作：Overflow和Float属性Height属性Clear属性下图展示了清除浮动布局的参考示意图：如果一个元素比包含它的元素更高，并且它是浮动的，它将溢出到容器之外。我们可以通过设置overflow: auto;解决这个问题。CSS 溢出和浮动属性让我们看一个例子，其中图像比其容器的高度更大，导致图像超出其容器的边界，并且可能破坏布局。示例html> div { border: 2px solid #f0610e; padding: 5px; background-color: #40a944; } .img { float: right; border: 3px solid #40a944; } Without Clearfix There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don't look even slightly believable. If you are going to use a passage of Lorem Ipsum, you need to be sure there isn't anything embarrassing hidden in the middle of text. All the Lorem Ipsum generators on the Internet tend to repeat predefined chunks as necessary, making this the first true generator on the Internet. html>解决这个溢出问题，我们可以将 overflow: auto; 属性设置给相应的元素，确保图像完全包含在容器内。让我们看一个例子： div { border: 2px solid #f0610e; padding: 5px; background-color: #40a944; overflow: auto; } .img { float: right; border: 3px solid #40a944; } With Clearfix There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don't look even slightly believable. If you are going to use a passage of Lorem Ipsum, you need to be sure there isn't anything embarrassing hidden in the middle of text. All the Lorem Ipsum generators on the Internet tend to repeat predefined chunks as necessary, making this the first true generator on the Internet. 设置CSS高度属性您也可以通过设置元素的高度与浮动图像的高度相似来实现清除浮动。示例让我们看一个例子： div { border: 2px solid #f0610e; padding: 10px; height: 120px; background-color: #40a944; } .img { float: right; border: 3px solid #f0610e; } There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don't look even slightly believable. If you are going to use a passage of Lorem Ipsum, you need to be sure there isn't anything embarrassing hidden in the middle of text. All the Lorem Ipsum generators on the Internet tend to repeat predefined chunks as necessary, making this the first true generator on the Internet. 设置CSS清除属性CSS Clear 属性适用于浮动和非浮动元素。它设置了一个元素是否必须在其前面的浮动元素下面（清除）移动。Clear属性可以有以下值之一：none: 是一个关键词，指示元素不会向下移动以清除之前的浮动元素。left: 是一个关键词，指示元素会向下移动以清除左浮动。right: 是一个关键词，指示元素会向下移动以清除右浮动。both: 是一个关键词，指示元素会向下移动以清除左右浮动。inline-start: 是一个关键词，指示元素会向下移动以清除其包含块开头的浮动，即LTR脚本上的左浮动和RTL脚本上的右浮动。inline-end: 是一个关键词，指示元素会向下移动以清除其包含块尾部的浮动，即LTR脚本上的右浮动和RTL脚本上的左浮动。将Clear设置为left以下示例演示了使用 clear:left 属性的clearfix： .main { border: 1px solid black; padding: 10px; } .left { border: 1px solid black; clear: left; } .aqua { float: left; margin: 0; background-color: aqua; color: #000; width: 20%; } .pink { float: left; margin: 0; background-color: pink; width: 20%; } p { width: 50%; } There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don't look even slightly believable. Lorem ipsum dolor sit amet, consectetuer adipiscing elit. This paragraph clears left. 设置Clear为right下面的示例演示了使用清除样式 防止浮动元素溢出（clear:right） 属性： .main { border: 1px solid black; padding: 10px; } .right { border: 1px solid black; clear: right; } .aqua { float: right;