wp-syntax.css for Twenty-Ten WP theme

wp-syntax.css

#content .wp_syntax {
  color: #100;
  background-color: #f9f9f9;
  border: 1px solid silver;
  margin: 0 0 1.5em 0;
  overflow: auto;
}

/* IE FIX */
#content .wp_syntax {
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: expression(this.scrollWidth > this.offsetWidth ? 15 : 0);
  width: 100%;
}

#content .wp_syntax table {
  border-collapse: collapse;
  margin: 0;
}

#content .wp_syntax div, #content .wp_syntax td {
  vertical-align: top;
  padding: 2px 4px;
}

#content .wp_syntax .line_numbers {
  text-align: right;
  background-color: #def;
  overflow: visible;
}

#content .wp_syntax .line_numbers pre {
  background-color: #def;
  color: gray;
}

/* potential overrides for other styles */
#content .wp_syntax pre {
  margin: 0;
  padding: 0;
  width: auto;
  float: none;
  clear: none;
  overflow: visible;
  font-size: 12px;
  line-height: 1.333;
  white-space: pre;
}

There still remains the problem of the column for line numbers being wider than it should: