main ID, 210
maintenance, 33
margin property, 58, 70, 73, 75
margin-bottom property, 69
margin-left property, 69
margin-right property, 69
margin-top property, 69
margins
for body element, 69–70
in boxes, 61
negative values for, 73
for paragraphs, 77
shorthand properties for, 71
marquee tag, 12, 12
master font families, 96
medium value for borders, 157
menus, 250–251, 250–251
meta-languages, 5
Meyer, Eric A., 19, 247
modes in DOCTYPE Switching, 19
modularization, 17
Monday scheme in Wired News, 260, 260
monospace font family, 97
multiple link styles, 83
multiple linked sheets, 41, 46