Are there any hacks for max-width:-webkit-fit-content; for ie 8?
max-width:-webkit-fit-content;
Trying to get a child div to not take up the whole width of the parent and this works well
The closest I can think of is floating your elements. Not exactly alike, but probably sufficiently alike;) You need to set extra margin though, but this should be no problem with a conditional stylesheet.
.textbox { background-color: yellow; float:left; clear:left; }
Your modified fiddle