Hopefully these help!
1) You can adjust the padding:
table.standard_minimal td {
padding: 20px 30px 20px 0;
}
2) Can you screenshot what you refer to?
3) You sub menu font looks the same now. But this would do it.
nav.std-menu ul.sub-menu > li > a {
font-size: 16px;
}
4) As in the underline on hover?
nav.std-menu ul.sub-menu > li > a:hover {
text-decoration: none;
}
5) Adjust the opacity: Theme Options => General Options => Thumbnail Options
Center the text using this:
.bold-design figcaption .thumb-info {
width: 100%;
padding: 0;
}
.bold-design figcaption .thumb-info h4 {
text-align: center;
}
.