<!DOCTYPE html> <html class="slr"> <head> <style> .slr { writing-mode: sideways-lr; direction: rtl; } </style> </head> <body> <div> <div dir="ltr" style="inline-size:-moz-fit-content"> <div style="height:300px"> <div style="height:100px;width:120px;background:rgba(0,255,0,0.8);float:right;"></div> </div> <div style="height:200px"> <div style="height:100px;width:150px;background:rgba(255,0,0,0.8);float:right;"></div> </div> </div> <div style="background:silver"> This text should appear BELOW the red and green blocks. </div> </div> </body> </html>