How do I create a single.php file as the default template for single posts in the twentytwentythree theme?

The answer is, AFAIK, that you shouldn’t. It goes against how block themes work. Rather you should try to get your css to work with the block theme. What are the issues with getting your CSS to work with the new editor?

You can add it as style.css in your child theme, or you can add custom block styles with a simple plugin. The later is my prefered method as it works quite well with the block editor, and as a plugin it can be used even if I switch themes.

Related Posts:

  1. Need advice on theme customizer and child themes
  2. Need help setting default setting value for radio button in theme customizer
  3. Is having multiple theme customizers for different pages possible?
  4. Remove Customize Background and Header from Appearance admin menu without CSS or JS
  5. Is it possible to get a theme customizer setting from wp.customize using jquery?
  6. is there a simple way to list every templates / php files used to generate a specific page?
  7. Dynamically change feature image in customiser
  8. One button to change all settings in theme customizer?
  9. Design view breaking on Pages
  10. Dynamically loaded Theme components based on Customizer Settings values : changes not appearing in Customizer preview – (Workaround found)
  11. Understanding WordPress child theme custom JS loading
  12. Show different Customizer Settings on Page-Tamplates
  13. How to get custom image size for image uploaded in Customizer
  14. Passing array in add_option()
  15. How do I get current page ID in WordPress customizer file?
  16. Where to edit the template that is generating the code for dynamic_sidebar left-sidebar in the Understrap theme? [closed]
  17. Customizer: active_callback and sanitize_callback incompatibility?
  18. Skt full width basic slideshow problem
  19. WordPress Customizer Default Image
  20. Why is an array created in a function hooked to customize register populated when customizer is loaded but not when the front-end is loaded?
  21. How to specify the path for require_once in a child theme?
  22. Warning: printf(): Too few arguments in helpers.php file
  23. Removing “Powered by” footer using child theme PHP [closed]
  24. Trying to change featured image from 180×180 to full width on home page
  25. Getting text from custom field from customizer
  26. Why would the child theme load in the Customize preview, but not on the site itself?
  27. require get_template_directory() . ‘path/to-my/file.php’ BREAKS customize > themes functionality
  28. WordPress files break if I edit them, but adding a closing PHP tag fixes it
  29. WordPress child theme, creating a custom php template page
  30. Customizer: How to Sanitize a Decimal Number Range
  31. Add Text Area To Child Theme’s Home Page
  32. Use Custiomizer to setup meta theme color tag
  33. How to add button to top of theme customizer?
  34. How to store the_post_thumbnail() value in a variable
  35. Capture the Selected Radio Button Value between two files in wordpress theme
  36. Show the terms of the hierarchical taxonomy
  37. WordPress redirects page query parameter in URL
  38. Remove Custom Post Category In WordPress Slug Using .Htaccess
  39. Pagination in single.php
  40. For some time, some of my pages do not display the content anymore. Any idea where this could be coming from?
  41. WordPress navigation wont appear with wp_head
  42. How do you remove header sitewide from mobile only?
  43. OOP PHP class extends TwentyTwenty_Customize in Child Theme
  44. Dynamically switch file in get_template_directory_uri() | Function [closed]
  45. Grabing default from cuztomizer php file instead of other php script
  46. PHP inside echo HTML
  47. Need help for some PHP code
  48. How do you get the current post taxonomy so I can get the current post taxonomy? into a variable to THEN loop through all post with that taxonomy.,
  49. Uncaught TypeError: extract(): Argument #1 ($array) must be of type array, null given
  50. Illegal string offset in PHP function in via Theme Customizer
  51. How do you create a custom category widget that you can style?
  52. How do I edit the terms output args or array data?
  53. Header is not displaying on certain pages of wordpress theme [closed]
  54. How to extend SelectControl with data from my theme
  55. How to change basename url for wp-admin?
  56. how to replace h1 entry title with h2 in category pages only
  57. WordPress single.php get_header not working
  58. excep tonly one css, don’t load any css
  59. url not using query string no longer working
  60. Not able to remove caption shortcode from the content
  61. How to use wp_get_attachment_image or wp_get_attachment_image_src instead of $instance[‘single_feature_image_uri’]
  62. When I click for the redirect link it is showing the content of index.php instead of single_assignment_page.php
  63. Proper way to remove html code on child theme
  64. Child-Theme Category View with modified permalinks (%category% removed)
  65. remove_action from parent theme using child theme functions.php
  66. File from parent theme imported to child theme doesn’t work – any ideas?
  67. Weird fonts showing which are coming from database
  68. Problem with displaying CSS Stylesheets – Am I adding them correctly in my wordpress child theme?
  69. Check if current post in loop is last on current page
  70. “WARNING: Found @$ in the file __ Possible error suppression is being used
  71. How can I prevent a shortcode div from extending beyond its boundaries?
  72. How to change PHP variables with AJAX request in WordPress
  73. How to change this ajax function to submit to the default wordpress content area instead of the custom field ‘seller notes’?
  74. Child theme overirde template-tags in a theme built on underscores in inc/template-tags
  75. is_user_logged_in returns false when I access certain pages
  76. Unable to retrieve get_author_posts_url
  77. Limit the number of characters/words in an excerpt for a related posts section
  78. How can I edit a php custom page template to work in other themes?
  79. PHP “warning include_once(): Failed to open stream” Simple HTML DOM in WordPress Child Theme
  80. How to have different headers.php files based on the display page
  81. Display post date also if the date it’s the same for each post
  82. REST API custom endpoint to fetch pages and posts not working
  83. Submit remote form to wordpress REST API and save data to custom post type
  84. My single.php page skips the first div tag
  85. How to print all the inline styles in the WP_Styles instance together with their keys?
  86. Looping through dummy posts and showing them in the main index.php
  87. Exclude category from woocommerce product category list
  88. Create dashboard widget for custom theme support
  89. Create category after theme setup and modify the default one
  90. Should I set a page as “No-index” if I include it’s content within the front-Page.php via this method?
  91. Trying to get pagination working on WP_Query() post grid
  92. alternate left – right content inside the loop
  93. How to add locations input to user profile?
  94. Store user form submitted information in post type
  95. AJAX numerical pagination problem in TwentyFifteen-child theme
  96. Display attached images of a page or post that are insetred using gallery
  97. Add a custom link to each image in WordPress gallery
  98. add custom link to gallery images
  99. register dependency css and js inside a plugin class
  100. Change CSS Variable value in Theme Customizer Live Preview
Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)