Text Decoration Unerline

Hello. I developed a site using artisteer. I’ve never run into this problem before so now I have to ask why it doesn’t work. Typcially when I develop sites, I do not use underline links. In this case, my client would like for me to. So, in the css I use this below but for whatever reason, the links will not underline unless I manually underline them in the editor. Help would be greatly appreciated.

.art-postcontent a, .art-postcontent a:link
{
font-size: 13px;
font-family: Arial, ‘Arial Unicode MS’, Helvetica, Sans-Serif;
font-weight: bold;
font-style: normal;
text-decoration: underline;
color: #324253;
}

.art-postcontent a:visited, .art-postcontent a.visited
{
font-size: 13px;
font-family: Arial, ‘Arial Unicode MS’, Helvetica, Sans-Serif;
font-weight: bold;
font-style: normal;
text-decoration: underline;
color: #324253;
}

.art-postcontent a:hover, .art-postcontent a.hover
{
font-size: 13px;
font-family: Arial, ‘Arial Unicode MS’, Helvetica, Sans-Serif;
font-weight: bold;
font-style: normal;
text-decoration: underline;
color: #A6B7C9;
}