lines in category box

Can anyone tell me how to remove these lines please? I am using the avonlee contempo template...

We can, but we'll need to see the site.

http://79.170.40.227/scarletburn.com/

If you want to remove those lines altogether, remove the red parts from the Better Categories stylesheet:

.betterCategories, .betterDocuments, .betterEzpages,
.betterInformation, .betterMoreinformation, .betterBestsellers {
border-top: 1px solid #ffffff;
}

.betterCategories a, .betterCategories a:visited,
.betterDocuments a, .betterDocuments a:visited,
.betterEzpages a, .betterEzpages a:visited,
.betterInformation a, .betterInformation a:visited,
.betterMoreinformation a, .betterMoreinformation a:visited,
.betterBestsellers a, .betterBestsellers a:visited {
display: block;
background-color: transparent;
border-top: 2px solid #ffffff;
border-bottom:1px solid #000;
padding: 4px;
}

thank you!