<!DOCTYPE html> <html> <head> <title>margin-trim: flex-block-start-trimmed-only</title> <link rel="author" href="mailto:sammy.gill@apple.com"> <link rel="help" href="https://drafts.csswg.org/css-box-4/#margin-trim-flex"> <link rel="match" href="flex-block-start-trimmed-only-ref.html"> <meta name="assert" content="block-start should trim only margin block start of flex items"> <style> flexbox { display: flex; width: min-content; border: 1px black solid; margin-trim: block-start; } item { display: block; background-color: green; width: 50px; height: 50px; margin-inline: 10px; margin-block: 10px; } </style> </head> <body> <flexbox> <item></item> <item></item> <item></item> </flexbox> </body> </html>