```css
color: #999999;
text-decoration: none;
border-bottom: 1px solid #ccc;
```css
color: #999999;
text-decoration: none;
border-bottom: 1px solid #ccc;
a:hover {
color: #4CAF50;
```css
color: #999999;
text-decoration: none;
border-bottom: 1px solid #ccc;
a:hover {
color: #4CAF50;
```css
color: #999999;
text-decoration: none;
border-bottom: 1px solid #ccc;
a:hover {
color: #4CAF50;
background-color: #4CAF50;
```css
a:hover:after {
color: #ff0000;