[chamberinternet]

You'll have to alter the following items in your CSS.

Black Lines Around Search Bar:

/**
 * header line 2
 */
#header .line2 {
  position: relative;
  width: 100%;
  border: none;
  border-top: 1px solid #000000;
  border-bottom: 1px solid #000000;
  background-color: #F3F3F4;
  height: 23px;
  color: #451300;
}

Category Box

/**
 * Dialog container
 */
.dialog {
  border: 1px solid #000000;
  padding: 0;
  margin: 0 0 30px;
  page-break-inside: avoid;
}

HTH