Why Are My Font Awesome 5 Icons Rendering as Squares on Pseudo-elements?

Font Awesome 5 Icon Rendering as Square on Pseudo Elements

In certain scenarios, users attempting to dynamically alter the content of span elements with Font Awesome icons via CSS may encounter an issue where the icon is rendered as a square instead of the intended icon.

Identifying the Problem

The provided CSS code demonstrates the issue:

.myClass {
  font-size:25px;
}

.myClass::after {
  font-family: 'Font Awesome 5 Free';
  content: '\f008';
}

However, this CSS displays the icon as a square rather than the specified icon ('f008').

Understanding the Solution

To resolve this issue, the CSS code must include the following property:

font-weight: 900

The final CSS code is as follows:

.myClass {
  font-size:45px;
}

.myClass::after {
  font-family: 'Font Awesome 5 Free';
  content: "\f008";
  font-weight: 900;
}

By specifying the font weight as 900, the icon will render correctly on the pseudo element.

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