All of the following examples should have a fit-to-content width. The light gray backgrounds should not fill an entire box; if any of them do, then the corresponding declaration is either not supported or is implemented incorrectly. I’m not certain why there’s white space around the text in the first two examples.

display: run-in;

This paragraph should be horizontally preceded by the text “display: run-in;”.

display: inline;
display: inline-block;
display: inline-table;
display: table;
display: table-header-group;
display: table-footer-group;
display: table-row-group;
display: table-row;
display: table-cell;
float: left;
float: right;
position: absolute;
position: fixed;

Below are some more examples from the CSS3 Ruby Module that I’m not sure about.

display: ruby;
display: ruby-base-container;
display: ruby-base;

CSS3 Box Model Module declarations have been omitted.