Remove frame

programming web dev
1

See this link http://www.koddinn.com/test.php
See the frame around the images, how can i remove it using css

here is css i use
a:link {
color: #5B5D5F;
border-color: #B1C9D0;
text-decoration: none;
}
a:visited {
color: #5B7E96;
text-decoration: none;
border-color: #B1C9D0;
}
a:hover {
color: 315676;
border-color: #B1C9D0;
text-decoration: none;
}
a:active {
color: 5B7E96;
text-decoration: none;
border-color: #B1C9D0;
}
.text1 {
font-family: Tahoma;
font-size: 10px;
font-weight: normal;
color: #000000;
font-style: normal;
line-height: normal;
font-variant: normal;
}
.head {font-family: Tahoma;
font-size: 11px;
font-weight: normal;
color: #A4A4A4;
font-style: normal;
line-height: normal;
font-variant: normal;
}