Milonic JavaScript Menu

Hello Ruth,
Thanks for your answer, that's the good way.
I've put all my page in <div id="content"> and my table defs like that

#content table {...here my defs...
}

Hello,

Beginning to make sites with xhtml, it seems to be a conflict between Milonic Menu (Version 5.26) and my css style.
With type selectors for table like this :
table {
margin-left: auto;
margin-right: auto;
text-align: left;
border: 1px #808080 solid;
background-color: #ffffff;
}
th ...