Testing our style sheets

This should be indented three ems.
mmm...this shouldn’t. Note that the indentation is more than three ems on screen, and more like three points on the printed page. en dash
–
n
em dash
—
m
Now we test the spacing of lists.

Item one. Garb wheeble rackle blepp, an hargo mifta shizbo rukh. Garb wheeble rackle blepp, an hargo mifta shizbo rukh. Garb wheeble rackle blepp, an hargo mifta shizbo rukh. Garb wheeble rackle blepp, an hargo mifta shizbo rukh.
Item two. Garb wheeble rackle blepp, an hargo mifta shizbo rukh. Garb wheeble rackle blepp, an hargo mifta shizbo rukh. Garb wheeble rackle blepp, an hargo mifta shizbo rukh.
Item three. Garb wheeble rackle blepp, an hargo mifta shizbo rukh. Garb wheeble rackle blepp, an hargo mifta shizbo rukh. Garb wheeble rackle blepp, an hargo mifta shizbo rukh.

Wasn’t that fun? Note the fact that the bullets and enumerations aren’t on the same baseline as the text.

Item one. Garb wheeble rackle blepp, an hargo mifta shizbo rukh. Garb wheeble rackle blepp, an hargo mifta shizbo rukh. Garb wheeble rackle blepp, an hargo mifta shizbo rukh.
Item two. Garb wheeble rackle blepp, an hargo mifta shizbo rukh. Garb wheeble rackle blepp, an hargo mifta shizbo rukh. Garb wheeble rackle blepp, an hargo mifta shizbo rukh.
Item three. Garb wheeble rackle blepp, an hargo mifta shizbo rukh. Garb wheeble rackle blepp, an hargo mifta shizbo rukh. Garb wheeble rackle blepp, an hargo mifta shizbo rukh.

Testing relative units:

6 picas

72 points

1 inch

2.54 cm

25.4 mm

300 pixels

12 picas

144 points

2 inches

5.08 cm

50.8 mm

600 pixels

Take a look at Netscape's known CSS problems.