Exclude css styling from button within single post articles

Hi again,

I have sucessfully applied the below CSS which highlights and 'underlines' and 'bold's' all hyperlinks withing single post articles.
However it is also applying the styling to buttons within the post article.
How can i exclude button links from this css styling in the single post article.

.single-post .inside-article .entry-content a {
font-weight: bold;
text-decoration: underline;
}