To shed a bit of light one what exactly I'm doing:
I am adjusting the settings of the tables in my epub using the style sheet:
Code:
table {
margin-left:auto;
margin-right:auto;
width: 70%;
border-collapse: collapse;
}
and have found that the changes only appear when I close and reopen the Sigil program. (the above worked beautifully for my needs, finally)