[Theme; i excel] iheader and entry titles

Entry title for is to large for breadcrumb program causes problems with style sheet. Large font entry title in header pushes breadcrumbs off container and into whitespace creating a large blank area before content container. By changing font size it corrects issue but I can’t seem to locate where to do it without more issues. Have attempted to custom css font size with .iheader .entry-title and it doesn’t work.

have gone into the style.css and made some changes to no avail.

Any idea’s that would help are appreciated .

.iheader .titlebar .entry-title h1 {
font-size: 22px;
} does not work or

.entry-title a {
font-size: 22px;
}

for now need to keep breadcrumb program off which defeats purpose.
Thanks from a newb!