How to have embedded images from smugmug take full width of blog posts

this is what should work for you based on the link you provided in your edited answer:

.postcontent img {
  height: auto;
  width: 630px;
}

and that can go in your custom.css file. Make sure to clear your cache and refresh after making the change.

Related Posts:

  1. How do I embed youtube videos with https instead of http in the URL?
  2. WP Oembed not passing through the “autoplay=1” variable
  3. How can I change Max Embed Size in WordPress 3.5?
  4. Soundcloud embed shortcode does not work
  5. wp_embed_register_handler not working
  6. Embed .mov file via ‘Add Media’ not working
  7. How to add new embed handler not supported by oembed
  8. Manipulating oembed_dataparse stopped working for YouTube embeds
  9. Youtube – Embed as IFRAME
  10. Customize Embedded Tweets (or, How To Hide Photos in Embedded Tweets)
  11. How to change WordPress embedded player size or show just the play button
  12. how to embed external webpage in my wordpress page
  13. wp_embed_register_handler is not working
  14. use of tag into wordpress
  15. Any way to use a custom Parameter for vimeo embed without using an iframe?
  16. Is it possible to modify the default YouTube embed attributes string?
  17. ted talks embed fixed, but can’t control size
  18. Removing WordPress Icon from oembed link footer
  19. How to embed a WordPress article on another website [closed]
  20. Hiding Comments Icon On oembed
  21. Youtube parameters within WordPress embed code?
  22. How to create a static player top or bottom of wordpress?
  23. Audio Playlists – Multiple file type support?
  24. Vimeo video embeds doesnt seem to work with ACF [closed]
  25. vimeo/youtube video embed with thumbnails
  26. Embed YouTube video from custom field value
  27. Search XML file from within WordPress?
  28. WordPress keeps altering my embed code
  29. Can I use wp_oembed_get to detect a valid embeddable link or is there a better way to do so?
  30. disable video URL auto-embedding for a part of the post
  31. Embeding YouTube video via a template function throws iframe cross-domain policy error
  32. extra text in Vimeo Embedded videos
  33. Check if page is embeded
  34. How can I override print_embed_sharing_dialog() in WordPress 4.5
  35. Video Embed with Captions in Turkish
  36. Embed Post in external page
  37. How can I force oEmbed to display fixed height & width dimensions?
  38. YouTube embed parameters?
  39. Embed Youtube video link in wordpress editor
  40. WordPress get embedded/attachment video
  41. pdf (25MB) – how to display and enable download?
  42. Outside url for post content
  43. want to stop stripping out from my post content
  44. How to auto embedded youtube with wp_insert_post()
  45. Is there a way to create embed codes from wordpress/buddypress content?
  46. Display total questions of Moodle in WordPress [closed]
  47. How to display real-time data which is stored in an IBM Cloud web app
  48. MP4 video on wordpress working on desktop, not on mobile devices
  49. Embedding custom posts with REST API
  50. How to Implement Responsive YouTube Video Framing? [closed]
  51. Embedded tweets get wrapped in tags and fail to load
  52. How to change the way wp_embed handles only youtube videos?
  53. How To Display Content from a website on wordpress page?
  54. How to make my new theme read [youtube id=”id of the video here” width=”600″ height=”350″]?
  55. How to put an external object into WordPress to that occupies most of the available space?
  56. Div around YouTube video
  57. Embedding Youtube video on comments
  58. Reusing header.php from Yii application
  59. Add custom parameters in SoundClound embed
  60. How to make enqueue_embed_scripts work with the embed_template filter
  61. How do I not embed the SoundCloud player? I just want the link
  62. Add Watermark to PDF’s of logged in user in WordPress upon upload to media library [closed]
  63. YouTube embeded video will not resize (only full screen responsive) [closed]
  64. How can I embed an Excel spreadsheet that allows users to edit certain fields, but is still “read-only”
  65. TED talk embedded videos cut off by sidebar
  66. Help with jot form pro embed code
  67. WordPress fails to embed video URL
  68. changes after I save a post
  69. Embed a Google Docs in WordPress?
  70. Is there a way to do nested embeds in the REST API?
  71. embed via wp_embed_register_handler only works in front-end
  72. Code playground (like CodePen) inside WordPress?
  73. Embed wikipedia page in WordPress?
  74. Embed post wont work on custom post type
  75. How to embed my latest WordPress post into an external page
  76. [embed]Using WordPress 5.5.1 there is no embed option after the video is uploaded
  77. Embedded videos not displaying on page
  78. Why does my custom html code (for a donation form) appear in a preview but not in the published post?
  79. Embed Microsoft Forms into WordPress page
  80. How to disable URL preview in WordPress comments
  81. Nofollow attribute in WordPress link embed code?
  82. Why most embed feature doesn’t work?
  83. Remove wordpress embed share icon?
  84. Youtube iframe embed keeps disappearing from page
  85. ‘[code]’ shortcode to markup programming code does not work
  86. WordPress Mediaelement – Youtube Videos Embed Options
  87. Embedding multiple song players on one page without it effecting the load time
  88. how to embed a .mp4 video the url postfix with secret key
  89. Adding an official oEmbed provider to WordPress
  90. CartoDB embedding doesn’t work
  91. My WordPress editor deletes all characters after emoji – how can I fix this?
  92. Do_Shortcode not working for Embed any tweet
  93. How to embed php page from separate site
  94. Increase size of Google Document Site Wide [closed]
  95. WordPress: embedding last posted video
  96. Enclosures being deleted “automatically”
  97. How can I create iframe/embeddable content from my WordPress site?
  98. Completely disable oEmbed and auto-embed on frontend and post editor?
  99. How to anchor to embed video
  100. Embed links work on new page creation, not on edit