Ciao a tutti!
ho delle specifiche che dicono:
" la formattazione del testo deve essere fatta solo tramite i css.la formattazione deve essere fatta solo in em e non in pixel...consigliato 0.9em"

my css da modificare è questo:
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.space {font-family:Verdana, Arial, Helvetica, sans-serif; color:#000000; font-size:1px}
.topbar {font-family:Verdana, Arial, Helvetica, sans-serif; color:#FFFFFF; font-size:11px}
.testo {font-family:Verdana, Arial, Helvetica, sans-serif; color:#000000; font-size:11px}
.paginaint {font-family:Verdana, Arial, Helvetica, sans-serif; color:#000000; font-size:11px; background-color:#F5F5F5}
.bottomdiv {font-family:Verdana, Arial, Helvetica, sans-serif; color:#999999; font-size:12px}
.login {font-family:Verdana, Arial, Helvetica, sans-serif; color:#0099FF; font-size:11px}
.menusxline {background-color:#99CCFF}
.menusxbg {background-color:#FFFFFF}
.rightbg {background-color:#C5E6FF}
.rightbgpag {background-color:#FFFFFF}
.rightlink {background-color:#E6F6FF; border:1pt solid #99CCFF}
.errore {font-family:Verdana, Arial, Helvetica, sans-serif; color:red; font-size:10px; font-weight:bold}

.titolo {font-family:Verdana, Arial, Helvetica, sans-serif; color:#FF6633; font-size:11px; font-weight:bold}
.titolopag {font-family:Arial, Verdana, Helvetica, sans-serif; color:#FF6633; font-size:14px; font-weight:bold}
.titoloblu {font-family:Verdana, Arial, Helvetica, sans-serif; color:#0033CC; font-size:12px; font-weight:bold}

.contenuto {font-family:Verdana, Arial, Helvetica, sans-serif; color:#000000; font-size:11px}
.tabint {font-family:Verdana, Arial, Helvetica, sans-serif; color:#FF6633; font-size:11px; font-weight:bold; height:21px}
.tabintdett {font-family:Verdana, Arial, Helvetica, sans-serif; color:#FF6633; font-size:11px; font-weight:bold; height:21px; padding-left:10px}
.tabtit {font-family:Verdana, Arial, Helvetica, sans-serif; color:#999999; font-size:11px; background-color:#F5F5F5; text-align:right}
.tabcont {font-family:Verdana, Arial, Helvetica, sans-serif; color:#000000; font-size:11px; background-color:#F5F5F5}

.ricerca {font-family:Verdana, Arial, Helvetica, sans-serif; color:#999999; font-size:10px}
.maggiore {font-family:Arial, Helvetica, sans-serif; color:#000000; font-size:10px}
.field {font-family:Arial, Helvetica, sans-serif; color:#000000; font-size:11px; background-color:#FFFFFF; border:solid; border-width:1px 1px 1px; border-color:#666666 #666666 #666666}
.fieldcombo {font-family:Arial, Helvetica, sans-serif; color:#000000; font-size:11px; background-color:#FFFFFF; border:solid; border-width:1px 1px 1px; border-color:#666666 #666666 #666666}
.fieldgrigio {font-family:Arial, Helvetica, sans-serif; color:#000000; font-size:11px; background-color:#F5F5F5; border:solid; border-width:1px 1px 1px; border-color:#666666 #666666 #666666}
select {font-family:Arial, Helvetica, sans-serif; color:#000000; font-size:11px; background-color:#FFFFFF; border:solid; border-width:1px 1px 1px; border-color:#666666 #666666 #666666}

a {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:11px; color:#000000; text-decoration:underline}
a:link {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:11px; color:#000000; text-decoration:underline}
a:visited {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:11px; color:#000000; text-decoration:underline}
a:active {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:11px; color:#000000; text-decoration:underline}
a:hover {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:11px; color:#FF6633; text-decoration:underline}

a.topbar {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:11px; color:#FFFFFF; text-decoration:none}
a.topbar:link {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:11px; color:#FFFFFF; text-decoration:none}
a.topbar:visited {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:11px; color:#FFFFFF; text-decoration:none}
a.topbar:active {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:11px; color:#FFFFFF; text-decoration:none}
a.topbar:hover {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:11px; color:#FFFFFF; text-decoration:none}

a.menu {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:11px; color:#000000; text-decoration:none}
a.menu:link {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:11px; color:#000000; text-decoration:none}
a.menu:visited {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:11px; color:#000000; text-decoration:none}
a.menu:active {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:11px; color:#000000; text-decoration:none}
a.menu:hover {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:11px; color:#FF6633; text-decoration:none}

a.menuh {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:11px; color:#FF6633; text-decoration:none}
a.menuh:link {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:11px; color:#FF6633; text-decoration:none}
a.menuh:visited {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:11px; color:#FF6633; text-decoration:none}
a.menuh:active {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:11px; color:#FF6633; text-decoration:none}
a.menuh:hover {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:11px; color:#FF6633; text-decoration:none}

a.titolo {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:11px; color:#FF6633; font-weight:bold; text-decoration:none}
a.titolo:link {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:11px; color:#FF6633; font-weight:bold; text-decoration:none}
a.titolo:visited {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:11px; color:#FF6633; font-weight:bold; text-decoration:none}
a.titolo:active {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:11px; color:#FF6633; font-weight:bold; text-decoration:none}
a.titolo:hover {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:11px; color:#FF6633; font-weight:bold; text-decoration:underline}

a.entra {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:10px; color:#0033CC; text-decoration:none}
a.entra:link {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:10px; color:#0033CC; text-decoration:none}
a.entra:visited {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:10px; color:#0033CC; text-decoration:none}
a.entra:active {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:10px; color:#0033CC; text-decoration:none}
a.entra:hover {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:10px; color:#FF6633; text-decoration:none}

a.bottom {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:12px; color:#000000; text-decoration:none}
a.bottom:link {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:12px; color:#000000; text-decoration:none}
a.bottom:visited {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:12px; color:#000000; text-decoration:none}
a.bottom:active {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:12px; color:#000000; text-decoration:none}
a.bottom:hover {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:12px; color:#000000; text-decoration:none}

a.errore {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:10px; color:red; font-weight:bold; text-decoration:underline}
a.errore:link {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:10px; color:red; font-weight:bold; text-decoration:underline}
a.errore:visited {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:10px; color:red; font-weight:bold; text-decoration:underline}
a.errore:active {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:10px; color:red; font-weight:bold; text-decoration:underline}
a.errore:hover {font-family:Verdana, Arial, Helvetica, sans-serif; font-size:10px; color:red; font-weight:bold; text-decoration:underline}
.titolopiccolo { font-family:Verdana, Arial, Helvetica, sans-serif; color:#FF6633; font-size:10px; font-weight:bold }
.contenutopiccolo { font-family:Verdana, Arial, Helvetica, sans-serif; color:#000000; font-size:10px}
.tabcontMin { font-family:Verdana, Arial, Helvetica, sans-serif; color:#000000; font-size:9px; background-color:#F5F5F5 ; font-style: italic}
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Domanda cretina:
come faccio ad identificare in un css solo il testo?

Domanda -cretina(spero)
il sito deve rimanere assolutamente come è adesso,
solo se cambio il carattere deve cambiare (esempio: ho provato a cambire il font-size di .testo da 11px a 0.9em ma la dimensione del testo anche se non cambio il tipo di visualizzazione del carattere mi cambia!
Come fare?
Scusate, magari son cose banali ma è il primo giorno che lavoro sui css.
Grazie a tutti!