block-container-block-start-collapsed-margins-ref.html (688B)
1 <!DOCTYPE html> 2 <html> 3 <head> 4 <title>margin-trim: block-container-block-start-collapsed-margins</title> 5 <link rel="author" title="Sammy Gill" href="mailto:sammy.gill@apple.com"> 6 <link rel="help" href="https://drafts.csswg.org/css-box-4/#margin-trim-block"> 7 <meta name="assert" content="collapsed block-start margins should be trimmed but not affect container margins"> 8 <style> 9 container { 10 display: block; 11 margin-trim: block; 12 margin-block-start: 10px; 13 } 14 item { 15 display: block; 16 width: 50px; 17 height: 50px; 18 background-color: green; 19 } 20 </style> 21 </head> 22 <body> 23 <item style="margin-block-start: 0px;"></item> 24 <container> 25 <item></item> 26 </container> 27 </body> 28 </html>