Let me add this:
I found that You have this (.post font) code in two versions:
(Maybe You have some font codes in Theme fonts menu!
Then again the statement might be twice in style.css)
.entry-content p, .entry-content ul, .entry-content ol, .comment-entry ol {
font-family: 'Trebuchet MS';
font-size: 1.1em;
}
.entry-content, .entry-content p, .slider_post_entry p, .entry-content ul, .entry-content ol, .comment-entry ol {
color: #2C2B2B;
font: 12px/20px arial;
}
Maybe this one will do:
.entry-content, .entry-content p, .slider_post_entry p, .entry-content ul, .entry-content ol, .comment-entry ol {
color: #2C2B2B;
font-family: georgia,verdana,tahoma,arial;
font-size: 14px;
}
The first font name & size is Your choice 🙂
Kim