Statically rotate font-awesome icons

Question

I'd like to statically rotate my font-awesome icons by 45 degrees. It says on the site that:

To arbitrarily rotate and flip icons, use the fa-rotate-* and fa-flip-* classes.

However, doing

<i class="fa fa-link fa-rotate-45" style="font-size:1.5em"></i>

does not work, whereas replacing fa-rotate-45 with fa-rotate-90 does. Does this mean that they in fact cannot rotate arbitrarily?

Answer 1

Before FontAwesome 5:

The standard declarations just contain .fa-rotate-90, .fa-rotate-180 and .fa-rotate-270. However you can easily create your own:

.fa-rotate-45 {
    -webkit-transform: rotate(45deg);
    -moz-transform: rotate(45deg);
    -ms-transform: rotate(45deg);
    -o-transform: rotate(45deg);
    transform: rotate(45deg);
}

With FontAwesome 5:

You can use what’s so called “Power Transforms”. Example:

<i class="fas fa-snowman" data-fa-transform="rotate-90"></i>
<i class="fas fa-snowman" data-fa-transform="rotate-180"></i>
<i class="fas fa-snowman" data-fa-transform="rotate-270"></i>
<i class="fas fa-snowman" data-fa-transform="rotate-30"></i>
<i class="fas fa-snowman" data-fa-transform="rotate--30"></i>

You need to add the data-fa-transform attribute with the value of rotate- and your desired rotation in degrees.

Source: https://fontawesome.com/how-to-use/on-the-web/styling/power-transforms