Cascading Style Sheets (CSS) are a collection of formatting rules that control the appearance of content in a web page. Use CSS Format Switcher to format and optimize your code even further that will help you lower your file size by using shorthand and clubbing common selectors and properties together. Use cautiously if you’re running it on a huge css file. You could possibly lowering file size at the cost of code legibility.

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CSS Format Switcher

#navigation { position: absolute; top: 0px; left: 0px; width: 10em; } /*please copy CSS code like that.*/