How enqueue CSS out of theme folder?

You can use content_url() to get a URL to the wp-content folder:

add_action( 'init', function() {
    wp_enqueue_style( 'my-tag', content_url( 'cssfile.css' ) );
});

See https://developer.wordpress.org/reference/functions/content_url/

Related Posts:

  1. Remove Open Sans from Twenty Twelve theme
  2. Enqueue Google Web Fonts Without Messing Up Symbols In URL
  3. Inbuilt style for jquery-ui-datepicker
  4. Why is style.css not being enqueued?
  5. How to conditionally enqueue a stylesheet only for a certain page(s)?
  6. How to enqueue style before style.css
  7. What is the correct way to enqueue multiple CSS files?
  8. Remove wp_add_inline_style
  9. Is it possible to enqueue a raw CSS string directly from within a template file?
  10. Use wp_enqueue_scripts, not wp_print_styles?
  11. Why isn’t my theme processing SASS?
  12. How to combine multiple CSS files and concatenate JavaScripts if WordPress recommends enqueuing them?
  13. Adding style sheet to specific page
  14. How Can I Use A Child Theme Effectively When Parent’s CSS Is Located in a ‘CSS folder’?
  15. Disable child theme css on certain pages
  16. When enqueing a stylesheet, is it possible to remove the type attribute? [duplicate]
  17. Load custom css after bootstrap
  18. Enqueue style for Password Reset page
  19. The correct way to include JavaScript and CSS in my WordPress Themes
  20. Is it possible to change the path of a css file that is registered through wp_enqueue_style()?
  21. Relative path instead of absolute for wp_enqueue_script
  22. get_stylesheet_uri returns wrong path
  23. Override load-styles.php with admin screen css
  24. CSS file not registering through add_action
  25. Relative path in wp_register_style not working
  26. Custom Admin CSS styles to style media uploader?
  27. getting url in wp_enqueue_style
  28. How the Css File is Linked without calling it in header.php?
  29. Loading different stylesheet on WordPress pages?
  30. Use wp_add_inline_style to add code to before wp_head?
  31. why enqueued styles in header.php shows in footer?
  32. How to insert html/css/javascript code to wordpress plugin
  33. Adding external stylesheet after ALL other styles
  34. Different ways to load child theme css
  35. How to enqueue a random css style?
  36. How to override Bootstrap css with my child theme css in wordpress?
  37. Enqueue styles in new site editor in WordPress 5.9
  38. How to organize priority of plugins CSS files?
  39. why this media query is not working / not loading when I put it in child theme?
  40. How do I make header.php use different css for different pages?
  41. Load CSS in footer, like your can with JS?
  42. Child theme stylesheet not always overriding “index”
  43. Child Theme CSS not showing at all
  44. Faster fonts on mobile
  45. Display Something in the Header After All Styles are Loaded
  46. My CSS suddenly doesn’t load anymore [closed]
  47. How can I force Dynamic CSS via ACF values to update on page load?
  48. functions.php – inject inline css from file
  49. Append style tag in head while shortcode runs
  50. How can I move my custom css to the very bottom of the head section?
  51. CSS getting injected into index from somewhere after theme/custom CSS is loaded, overriding all of my CSS [closed]
  52. enqueing Javascript and CSS
  53. Load custom CSS before admin CSS
  54. Including CSS files in HEAD based on page content
  55. How would one set or override a Fallback font for characters in second language?
  56. First element/selector of enqueued CSS file breaks
  57. Dequeue styles with query doesn’t work
  58. Save custom option in CSS file
  59. How to enqueue stylesheets in child-theme functions.php?
  60. Dequeing Parent Fontawesome Deques Parent Styles
  61. Add inline CSS to login page with wp_add_inline_style
  62. Bootstrap Integtration
  63. Set different css stylesheet for specific pages [duplicate]
  64. My Child Theme CSS Isn’t Working
  65. Font size decreases when child theme is created from parent theme?
  66. Controling css order
  67. Why are my parent styles loading after my child styles?
  68. How to make CSS load live based on options clicked in the theme customizer?
  69. Replacing parent theme’s IE-specific CSS
  70. Browser stacks different versions of style.css
  71. Bootstrap 4 Optimization
  72. Enqueue MCE Editor CSS in admin page
  73. plugin not loading my css and js
  74. Custom theme – Bootstrap CSS not loading via wp_enqueue_style or otherwise
  75. CSS Selector to override default theme.json custom properties in theme stylesheet
  76. How to position a table at the center of div horizontally & vertically
  77. In a bootstrap responsive page how to center a div
  78. How to work with custom styles saved in theme option?
  79. Target h1 on single post page [closed]
  80. dynamic css file for admin / backend and get_option results in Uncaught Error: Call to undefined function get_option()
  81. Why is css not applied on paginated query?
  82. Best practice for custom primary color of pages
  83. Insert a group block inside a list item
  84. wp_head not injecting css
  85. Remove the main title, but only from the main page
  86. aos properties ‘invalid’ and not recognised when included as a css class [closed]
  87. ACF Extended : Disable styles in front [closed]
  88. How to avoid problems caused by new block-library default CSS rules (wp 6.1.1)
  89. Grid problem on privew mode
  90. Disabling double vertical scrollbar and horizontal scrolling?
  91. Customize margin between paragraphs using the Gutenberg Style editor
  92. How to remove automatically added custom style tag?
  93. How to solve WordPress accordion problem on Iphone?
  94. Hyperlink Underline using Border-Bottom Showing Up Under Site Logo Image
  95. How do i configure vscode live preview for simple wordpress style.css edits?
  96. How to optimise Text to HTML ratio for SEO by separating the HTML into multiple files?
  97. Check if a new WordPress post is successfully published with jQuery
  98. How to remove default flex child margin?
  99. Injecting CSS into Iframe
  100. How to overwrite a thrid party block’s css in a child theme?