Thursday, 16 October 2014

How to Create Circular Backgrounds for your Font Awesome Icons

I was recently using the font awesome icons for a webpage I was creating, which provide a really nice scalable set of general purpose icons, and I wanted them to appear on a circular background, something like this:

image

But not being an expert in CSS, I didn’t know how to set this up. After a bit of searching and experimentation I found two different ways to create this effect.

Method 1: CSS circles

The first is to create the circle using the border-radius css property and some padding to create space around your icon. You can set the radius to 50% or to half the width and height to create a circle. The only catch is that the container needs to be square, otherwise you’ll end up with an ellipse. For example, if I use this style

.circle-icon {
    background: #ffc0c0;
    padding:30px;
    border-radius: 50%;
}

And then try to use it with a font awesome icon like this:

<i class="fa fa-bicycle fa-5x circle-icon"/>

I get an ellipse:

image

So we need to specify the height and width explicitly, and this leads us to also need some rules to get our icon centred horizontally (using text-align) and vertically (using line-height and vertical-align). So if we update our CSS style like this:

.circle-icon {
    background: #ffc0c0;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    text-align: center;
    line-height: 100px;
    vertical-align: middle;
    padding: 30px;
}

Now we get the circle as desired:

image

So mission accomplished, sort of, although it feels a shame to have to specify exact sizing for things. Maybe any CSS experts reading this can tell me a better way of accomplishing this effect. The good news is that font awesome itself has a concept of “stacked” icons which offers another way to achieve the same effect.

Method 2 – Stacked Icons

Stacked icons are basically drawing two font awesome icons on top of each other. Font awesome comes with the fa-circle icon which is a solid circle, so we can use that for the background. We need to style it to set the background colour correctly, and we use fa-stack-2x on this icon to indicate that it must be drawn twice the size of the icon that will appear to be inside the circle. Then we put both icons inside a span with the fa-stack class, and we can still use the regular font awesome styles to choose the overall icon size, such as fa-4x. So here for example, I have

<span class="fa-stack fa-4x">
  <i class="fa fa-circle fa-stack-2x icon-background"></i>
  <i class="fa fa-lock fa-stack-1x"></i>
</span>

where icon-background is simply specifying a background colour:

.icon-background {
    color: #c0ffc0;
}

and this looks like this:

image

As you can see this is a nice simple technique, and I prefer it to the CSS approach. Font awesome also includes circles with borders, so if you want to create something like this (I used three stacked icons), you can:

image

To experiment with this yourself, try this jsfiddle.

Post a Comment