Dynamically Change an Element Width/Height Using CSS3 ONLY!

Problem:

I needed to dynamically change the height/width of a div, but I didn't want to write another few lines of javaScript. Is there a way I can find a pure css solution? you bet!

Solution:

Thanks to CSS3, we can now do this easily using the calc() function!

#myDiv {
width: calc(100% - 100px);
height: calc(100% - 100px);
margin: auto;
border: solid 1px #000000;
}

More good news: It works on all browsers :)

Onward!

References:

http://www.w3schools.com/CSSref/func_calc.asp
http://stackoverflow.com/questions/1192783/css-how-to-set-div-height-100-minus-npx

Comments

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