Do you always update the DotNetNuke style sheets to underline a link?

As per rules to underline all links always update the necessary DotNetNuke style sheets to make links perfectly clear, by underlining them.

To underline links in DotNetNuke you need to change the styles in the style sheet Portals/_default/default.css

A:Link
{
    text-decoration: none;
    color: #003366;
}
A:Visited
{
    text-decoration: none;
    color: #003366;                   
}
A:Hover
{
    text-decoration: underline;
    color: #ff0000;
}
A:Active
{
    text-decoration: none;
    color: #003366;
}