How Can I Effectively Style SVGs with External CSS?

Styling SVG with External CSS

In the context of web development, SVG (Scalable Vector Graphics) offers numerous advantages over raster images, such as scalability, resolution independence, and the ability to manipulate via CSS. Styling SVG graphics becomes essential for customizing their appearance.

Incorporating External CSS

To style SVG graphics using external CSS, it's typically expected that the SVG code is included inline within the HTML document. However, if the SVG is stored in a separate file and referenced using an tag, external CSS will not directly affect the graphic's appearance.

Inline CSS with

To achieve styling via external CSS when SVGs are stored in separate files, an alternative approach is necessary. The SVG file can include an internal

<svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="50px" height="50px" viewbox="0 0 50 50">
  <defs>
    <style type="text/css">
      <!-- /* Insert CSS rules here */ -->
    </style>
  </defs>
  ...
</svg>

In this approach, the styling rules are defined within the internal

Dynamic Styling with Server-Side Manipulation

For cases where dynamic styling is required based on different active styles, server-side manipulation of the SVG file can be leveraged. Using XML processing libraries like Nokogiri in Ruby, the

Inline Styling with CSS Attributes

If none of the previous approaches are feasible, an option is to use inline styling within the tag by specifying style as an attribute. While not as flexible as external or internal CSS, this approach can provide some basic styling options.

<img src="/static/imghwm/default1.png" data-src="images/socYouTube.svg" class="lazy" title="View my videos on YouTube" alt="YouTube">

Caveats and Considerations

When styling SVG graphics, it's important to note that the CSS Cascade still applies, and rules defined in internal

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