چند تا توضیح مفیدو مختصر در موردکلاس های css

[boglado]

آقا وقتی من css سایتمو validate کردم این خطا ها و اخطارها را به من داد. حالا من باید چکار کنم
راه حلش چیست؟

128 a.mainlevel:link, a.mainlevel:visited Value Error : background Too many values or values are not recognized : url(../images/menu.jpg) no-repeat-y
130 a.mainlevel:link, a.mainlevel:visited Parse Error 5px;
130 a.mainlevel:link, a.mainlevel:visited Parse error - Unrecognized 5px;
132 line-height Parse Error line-height: 30px;
134 font-size Parse Error font-size: 13px;
136 text-align Parse Error text-align: left;
138 font-weight Parse Error font-weight: bold;
140 padding Parse Error padding: 0px 0px 0px 15px;
142 padding Parse error - Unrecognized }
260 table.moduletable td Value Error : font-weight none is not a font-weight value : none
425 .small Value Error : font-weight medium is not a font-weight value : medium
451 .contentpane Value Error : margin Parse Error left: 10px

484 .contentheading Parse Error 0px;
484 .contentheading Parse error - Unrecognized 0px;
484 .contentheading Parse error - Unrecognized 0px;
485 .contentheading Parse error - Unrecognized }
504 .componentheading Parse Error 0px;
504 .componentheading Parse error - Unrecognized 0px;
504 .componentheading Parse error - Unrecognized 0px;
505 .componentheading Parse error - Unrecognized }
578 a:hover Value Error : text-decoration normal is not a text-decoration value : normal
656 .ontab Value Error : cursor hand is not a cursor value : hand

678 .offtab Value Error : cursor hand is not a cursor value : hand

782 table.moduletableinset th Value Error : text-transform normal is not a text-transform value : normal
Warnings (20)
95 Same colors for color and background-color in two contexts BODY and a.pathway:visited
95 Same colors for color and background-color in two contexts .sectiontableheader and a.pathway:visited
95 Same colors for color and background-color in two contexts BODY and a.pathway:visited
95 Same colors for color and background-color in two contexts .sectiontableheader and a.pathway:visited
105 Same colors for color and background-color in two contexts .sectiontableheader and a.pathway:hover
105 Same colors for color and background-color in two contexts BODY and a.pathway:hover
172 a.mainmenu:visited Family names containing whitespace should be quoted. If quoting is omitted, any whitespace characters before and after the name are ignored and any sequence of whitespace characters inside the name is converted to a single space.
172 a.mainmenu:visited Family names containing whitespace should be quoted. If quoting is omitted, any whitespace characters before and after the name are ignored and any sequence of whitespace characters inside the name is converted to a single space.
200 a.sublevel:visited Family names containing whitespace should be quoted. If quoting is omitted, any whitespace characters before and after the name are ignored and any sequence of whitespace characters inside the name is converted to a single space.
200 a.sublevel:visited Family names containing whitespace should be quoted. If quoting is omitted, any whitespace characters before and after the name are ignored and any sequence of whitespace characters inside the name is converted to a single space.
282 Same colors for color and background-color in two contexts BODY and table.moduletable-top th
282 Same colors for color and background-color in two contexts .sectiontableheader and table.moduletable-top th
328 Same colors for color and background-color in two contexts .sectiontableheader and table.moduletable-top a:link
328 Same colors for color and background-color in two contexts BODY and table.moduletable-top a:link
344 Same colors for color and background-color in two contexts .sectiontableheader and table.moduletable-top a:visited
344 Same colors for color and background-color in two contexts BODY and table.moduletable-top a:visited
799 Same colors for color and background-color in two contexts BODY and table.moduletable-user a:link
799 Same colors for color and background-color in two contexts .sectiontableheader and table.moduletable-user a:link
815 Same colors for color and background-color in two contexts .sectiontableheader and table.moduletable-user a:visited
815 Same colors for color and background-color in two contexts BODY and table.moduletable-user a:visited