Clear: Float

I like the irony in this… after my mention yesterday of pushing html around for almost a decade, I hit an obstacle laying out a footer in the new world of Table-free markup. I wrote and manipulated a pile of javascript and css to try and push a footer down beneath two “float:left” divs … if you’re familiar with the Float property, it has a strange way of causing its parent to stop inheriting its contents height and width … the purpose of float:left (or right) is to allow following (or previous in the case of right float) content to wrap around it (similar to when you align-left an image inside a paragraph). This is useful when you’re creating columns of content. The annoyance comes in when you’d like that “next” piece of content to stop wrapping up around the floated element. This is where the “clear float” css class comes in. After spending probably 2+ hours going around and around with trying to layout my footer, it was a simple css style, “clear:left” that did the trick I was looking for. I had seen the ‘clear’ property forever, but it never clicked for me. I haven’t been using the ‘float’ property very long either, so that may be why I was unfamiliar with its powerful counterpart … in essence the “clear” property breaks the chain of the float property to rather start its own new line.

Discussion

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http://rlmansheim.com Rob

Wow. I feel your pain. I new to the “float” property. Thanks for the tip.
http://rlmansheim.com Rob

Wow. I feel your pain. I new to the “float” property. Thanks for the tip.
http://www.oastler.ca JamieO

The following is a very useful css declaration / “cheat” that from discussions I’ve had with other designers is fairly common.

.clear {
clear:both;
}

So if you are writing content pieces and your particular div containers need to be used in float and un-floated situations, you can put a above and be assured that it will work. The same also ensures that if you have multiple floated elements inside a larger container that the background / border for the container will extend all the way around the floated contents.

Note: Putting in theory is identical, but has been known to not have the same effect in Firefox and Safari.
http://www.oastler.ca JamieO

The following is a very useful css declaration / “cheat” that from discussions I’ve had with other designers is fairly common.

.clear {
clear:both;
}

So if you are writing content pieces and your particular div containers need to be used in float and un-floated situations, you can put a above and be assured that it will work. The same also ensures that if you have multiple floated elements inside a larger container that the background / border for the container will extend all the way around the floated contents.

Note: Putting in theory is identical, but has been known to not have the same effect in Firefox and Safari.
http://www.oastler.ca JamieO

The second paragraph of text should have &ltdiv class=”clear”></div> in it. Forgot to cleanse my response of actual html that would be interpreted as css by this page.
http://www.oastler.ca JamieO

The second paragraph of text should have &ltdiv class=”clear”></div> in it. Forgot to cleanse my response of actual html that would be interpreted as css by this page.
http://www.oastler.ca JamieO

<div class=”clear”></div>

Read what I meant please, not what I said? :P

P.S. The Wordpress AJAX Edit Comments plugin (http://wordpress.org/extend/plugins/wp-ajax-edit-comments/) would have saved your readers the pain of reading my typo corrections as separate posts.
http://www.oastler.ca JamieO

<div class=”clear”></div>

Read what I meant please, not what I said? :P

P.S. The Wordpress AJAX Edit Comments plugin (http://wordpress.org/extend/plugins/wp-ajax-edit-comments/) would have saved your readers the pain of reading my typo corrections as separate posts.
http://cssgirl.com Lindsey

I wouldn’t classify it as a cheat exactly, more of a “trick”. I think cheat is too close to “hack” which most people want to stay away from.

It is quite a commonly used trick that thankfully works 99% of the time (cross browser). It’s also good practice when you are using floats and you don’t want something to float to it’s right/left you clear the specific side, or clear both right in the css for that element.

I think the stacking and overlapping of floats is a common issue that stumps many CSS beginners, and this simple thing can fix many of the problems.
http://cssgirl.com Lindsey

I wouldn’t classify it as a cheat exactly, more of a “trick”. I think cheat is too close to “hack” which most people want to stay away from.

It is quite a commonly used trick that thankfully works 99% of the time (cross browser). It’s also good practice when you are using floats and you don’t want something to float to it’s right/left you clear the specific side, or clear both right in the css for that element.

I think the stacking and overlapping of floats is a common issue that stumps many CSS beginners, and this simple thing can fix many of the problems.
http://atrickdesign.com Pat

There are instances where clear:both is not entirely sufficient (namely, with some older browsers).

I’ve found this to be helpful when trying to ensure those floats work properly across platforms:

.clear {
height: 1px;
line-height: 1px;
font-size: 1px;
margin-top: -1px;
clear: both;
}

Hope that helps.
http://atrickdesign.com Pat

There are instances where clear:both is not entirely sufficient (namely, with some older browsers).

I’ve found this to be helpful when trying to ensure those floats work properly across platforms:

.clear {
height: 1px;
line-height: 1px;
font-size: 1px;
margin-top: -1px;
clear: both;
}

Hope that helps.
http://www.gomedia.us Wilson

Thanks for the rewording Lindsey! Cheers to the “CSS Girl”!!
http://www.gomedia.us Wilson

Thanks for the rewording Lindsey! Cheers to the “CSS Girl”!!
andre

I rather like the “clearfix”

http://www.positioniseverything.net/easyclearing.html

you would copy/paste this into your CSS, and then add a “clearfix” class to any element containing a float like that.

so I think it would go like this:
andre

I rather like the “clearfix”

http://www.positioniseverything.net/easyclearing.html

you would copy/paste this into your CSS, and then add a “clearfix” class to any element containing a float like that.

so I think it would go like this:
andre

ah. I’m not sure how to post code. oh well, the site is pretty clear.
andre

ah. I’m not sure how to post code. oh well, the site is pretty clear.
Nicole

Another prime example of issues with floats is determining parent container sizing with backgrounds. A parent container’s background image will stop where ever the static content ends – ignoring the floated content height, which can cause your background image to be cut off or not aligned properly. The fix for this is:

*html .parentContainer {height: 1%; display: block;}
.parentContainer:after {
clear:both;
content:” “;
display:block;
height:0pt;
visibility:hidden;
}

The first case with *html takes care of IE, and the :after selector will take care of most other browsers. This is a CSS alternative to adding in empty elements with “clear: both” styles.
Nicole

Another prime example of issues with floats is determining parent container sizing with backgrounds. A parent container’s background image will stop where ever the static content ends – ignoring the floated content height, which can cause your background image to be cut off or not aligned properly. The fix for this is:

*html .parentContainer {height: 1%; display: block;}
.parentContainer:after {
clear:both;
content:” “;
display:block;
height:0pt;
visibility:hidden;
}

The first case with *html takes care of IE, and the :after selector will take care of most other browsers. This is a CSS alternative to adding in empty elements with “clear: both” styles.
joel

Yes, the float issue is a bugger!
If you’re doing a double-float for a multi-column layout (float: right & float:left) and then slapping a footer beneath it, the best way to go about it is to put a div in there with
“clear:both;” between the main content & footer. :)
always tricky, for sure.
joel

Yes, the float issue is a bugger!
If you’re doing a double-float for a multi-column layout (float: right & float:left) and then slapping a footer beneath it, the best way to go about it is to put a div in there with
“clear:both;” between the main content & footer. :)
always tricky, for sure.
Duluoz

You can also use overflow on the parent element to trigger correct inheritance. You then have no need for a clearing element.

Example:

#foo { overflow: auto }
Duluoz

You can also use overflow on the parent element to trigger correct inheritance. You then have no need for a clearing element.

Example:

#foo { overflow: auto }
Jon Thomas

Hi Chris. You’ll still find that you run into some problems down the road with floats. You’ll be tempted to put an empty div below floated items to clear them as a spacer in some instances as well. Read this article, it works in most cases. I’ve had a lot of success with it.

http://www.sitepoint.com/blogs/2005/02/26/simple-clearing-of-floats/

Also, if you haven’t used display:inline to your advantage, check out item 1 on this page:

http://www.sitepoint.com/article/top-ten-css-tricks

After typing this, I just saw Duluoz’s comment in which he summarizes the method overflow method. The first article link I gave describes that method.
Jon Thomas

Hi Chris. You’ll still find that you run into some problems down the road with floats. You’ll be tempted to put an empty div below floated items to clear them as a spacer in some instances as well. Read this article, it works in most cases. I’ve had a lot of success with it.

http://www.sitepoint.com/blogs/2005/02/26/simple-clearing-of-floats/

Also, if you haven’t used display:inline to your advantage, check out item 1 on this page:

http://www.sitepoint.com/article/top-ten-css-tricks

After typing this, I just saw Duluoz’s comment in which he summarizes the method overflow method. The first article link I gave describes that method.
http://o3b.com Guillo

i recently switch to CSS websites… and i have a little gadget i carry to every website:

——————-
.clearfloat {
clear:both;
height:0;
font-size: 1px;
line-height: 0px;
}

the fellows of adobe included that in the dreamweaver templates… I hate templates but i wanted to see how they were building their floats

Regards
http://o3b.com Guillo

i recently switch to CSS websites… and i have a little gadget i carry to every website:

——————-
.clearfloat {
clear:both;
height:0;
font-size: 1px;
line-height: 0px;
}

the fellows of adobe included that in the dreamweaver templates… I hate templates but i wanted to see how they were building their floats

Regards
http://www.citeulike.org/profile/apekoff Heinnakix

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http://www.citeulike.org/profile/apekoff Heinnakix

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lynguyen

There's got to be a more semantic approach to '<div style=”clear:both”></div>'. The div has no meaning once styles are stripped. The 'separator' tag would have been nice if XHTML2 didn't die on us.
lynguyen

There's got to be a more semantic approach to '<div style=”clear:both”></div>'. The div has no meaning once styles are stripped. The 'separator' tag would have been nice if XHTML2 didn't die on us.
http://www.airwalk-design.com/ Web & Graphic Design

The float style is common yet tricky, maybe they should invent a new method :p
Matt

Thanks for this nice work!
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You’ll still find that you run into some problems down the road with floats. You’ll be tempted to put an empty div below floated items to clear them as a spacer in some instances as well.
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You can also use overflow on the parent element to trigger correct inheritance. You then have no need for a clearing element.
http://www.facebook.com/profile.php?id=788233882 Xylude Xaalud

I use this exclusively, works all the way down to IE6.

.floatWrap {
width:100%;
overflow:auto; /* If you get scrollbars try setting this to hidden *
}

Now just wrap that around your floats and you are good to go!
http://www.atheistunderworld.com/ BenTegland

Thanks for the help! This came in handy for me today!