Why is VSCode Showing 'CSS Property Value Expected' and 'At-Rule or Selector Expected' Errors in Go Templates?

Errors in VSCode Editing Go Template: "CSS Property Value Expected" and "At-Rule or Selector Expected"

When editing Go templates using the html/template package, errors like "property value expected css" and "at-rule or selector expected css" may arise when using {{ }} within the style attribute of HTML elements.

Solution:

To resolve these errors, disable the "HTML Validate Styles" setting in VSCode's settings. Here are the steps:

1. Open the VSCode Settings panel (Ctrl ,) or (Cmd ,).
2. Search for "html validate styles."
3. Uncheck the checkbox next to "Validate CSS Styles with htmlhint."

Explanation:

The VSCode Go plugin uses htmlhint to validate HTML and CSS. However, htmlhint expects pure CSS rules within the style attribute. Since Go templates allow for dynamic values (e.g., {{.Company.Color}}), the validator raises these errors. Disabling the HTML validation for styles allows these dynamic values to be parsed correctly without affecting the actual rendering of the styles.

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