WordPress uses a combination of PHP, HTML and CSS to render the appearance of a blog. If the CSS contains invalid code, the blog will fail to display as intended, as the Web browser won't understand ...

Cascading Style Sheets (CSS) is a stylesheet language used to describe the presentation of a document written in a markup language. Its most common application is to style web pages written in HTML ...

Among the many website design features that you can control with CSS is the height of your page elements. Though the height setting in HTML elements isn't usually set to a static number, this becomes ...

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