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Useful CSS Tricks for Responsive Design

css responsive mobile

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#1 nirajan

nirajan

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Posted 05 September 2012 - 12:17 PM

1. Responsive Video (demo)

This responsive video CSS trick was discovered by tjkdesign.com. I've blogged about it before, you may read the details here. It makes the video embed to expand fullwidth to the boundary.

.video {
	position: relative;
	padding-bottom: 56.25%;
	height: 0;
	overflow: hidden;
}

.video iframe,
.video object,
.video embed {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
}

2. Min & Max Width (demo)

Max-width property allows you to set the max width of the element. The purpose of max-width is to prevent the element from extending the boundary.

Max-Width Container

In the example below, I specify the container to display at 800px if possible, but it should not exceed 90% of the boundary width.

.container {
	width: 800px;
	max-width: 90%;
}

Responsive Image

You can make the image auto resize to the max width of the boundary by using max-width:100% and height:auto.

img {
	max-width: 100%;
	height: auto;
}

The above responsive image CSS works on IE7 and IE9, but doesn't work on IE8. To fix it, add width:auto. You may apply a conditional CSS specifically for IE8 or use the IE hack below:

@media \0screen {
img {
	width: auto; /* for ie 8 */
}
}

Min-Width

Min-width is opposit to max-width. It sets the minimum width of an element. In the example form below, min-width is used on the input text field to prevent the input from getting very small when scaling down.

   Posted Image
3. Relative Values (demo)

In responsive design, knowing when to use relative value can simplify the CSS and maximize the best layout result. Below are some examples.

Relative Margin

Below is an example of a commentlist where relative left margin is used to space out the threaded comments. Instead of using fixed pixel value, I used percentage value to space out the sub-lists. As shown on the left side of the screenshot, the content box in the sub-lists gets very small on mobile resolution if pixel left margin was used. Posted Image
Relative Font Size

With relative value (eg. em or %), the font size, line-height and margin spacing can be inherited. For example, I can change the font size on all descendant elements by simply changing the font-size on the parent element. Posted Image
Relative Padding

The screenshot below shows it is better to use relative percentage padding as opposed to fixed pixel padding. The box on the left shows an unbalanced padding space if pixel padding was used. The box with percentage padding on the right shows that the content area is maximized.  
Posted Image
4. Overflow:hidden Trick (demo)

As posted in my previous article, you can clear float with the overflow property. This trick is extremely useful. You can clear the float from the previous element and keep the content running within the container by applying overflow:hidden. Posted Image

5. Word-break (demo)

I also talked about the word-wrap property before. You can force unbreaking text (eg. long URL text) to wrap instead of running in a single line.

.break-word {
		word-wrap: break-word;
}

Posted Image

via :http://webdesignerwall.com







Also tagged with one or more of these keywords: css, responsive, mobile