How to Use HTML Entities (Like Non-Breaking Spaces) with CSS's `content` Property?

Incorporating HTML Entities into CSS with the Content Property

Question:

How can the CSS content property be utilized to incorporate HTML entities, specifically non-breaking spaces, into the display?

Solution:

Contrary to what may seem intuitive, simply using the ' ' entity in the content property, as in the example below, will not render the desired non-breaking space:

.breadcrumbs a:before {
  content: ' ';
}

To successfully display HTML entities using CSS content, the Unicode code point must be escaped. For instance:

.breadcrumbs a:before {
  content: '00a0';
}

Here, '

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