What does !important mean in CSS?

It means, essentially, what it says; that ‘this is important, ignore subsequent rules, and any usual specificity issues, apply this rule!’ In normal use a rule defined in an external stylesheet is overruled by a style defined in the head of the document, which, in turn, is overruled by an in-line style within the element itself (assuming equal specificity … Read more

What is the difference among col-lg-*, col-md-* and col-sm-* in Bootstrap?

Bootstrap 5 In Bootstrap 5 (alpha) there is a new -xxl- size: col-* – 0 (xs)col-sm-* – 576pxcol-md-* – 768pxcol-lg-* – 992pxcol-xl-* – 1200pxcol-xxl-* – 1400px Bootstrap 5 Grid Demo Bootstrap 4 In Bootstrap 4 there is a new -xl- size, see this demo. Also the -xs- infix has been removed, so smallest columns are simply col-1, col-2.. col-12, etc.. col-* – 0 (xs)col-sm-* – 576pxcol-md-* – 768pxcol-lg-* – 992pxcol-xl-* – 1200px Bootstrap 4 Grid Demo Additionally, Bootstrap 4 includes … Read more

Column order manipulation using col-lg-push and col-lg-pull in Twitter Bootstrap 3

This answer is in three parts, see below for the official release (v3 and v4) I couldn’t even find the col-lg-push-x or pull classes in the original files for RC1 i downloaded, so check your bootstrap.css file. hopefully this is something they will sort out in RC2. anyways, the col-push-* and pull classes did exist … Read more

Half circle with CSS (border, outline only)

You could use border-top-left-radius and border-top-right-radius properties to round the corners on the box according to the box’s height (and added borders). Then add a border to top/right/left sides of the box to achieve the effect. Here you go: WORKING DEMO. Alternatively, you could add box-sizing: border-box to the box in order to calculate the … Read more

How am I supposed to use index.html?

Many web servers will have a ‘default document’ that is returned when you specify just a path and no file name. So browsing to http://example.com will return the default document from the document root directory of that domain. Quite often the default document can be named index.html, index.htm or -if PHP is installed- index.php, but … Read more

Can I change Bootstrap button color?

You need to override your css so you can change the background to black. A simple way to do this is to create a custom css class (you can either put this in a <style type=”text/css”> tag in your HTML or put this in a separate CSS file) Then, give your button these classes