a:link {
     text-decoration: none;
}

 a:visited {
     text-decoration: none;
}

 a:hover {
     text-decoration: underline;
     background-color: #BAE498;
}

 a:focus {
     text-decoration: underline;
     font-weight: normal;
}

 a:active {
     text-decoration: underline;
     color: red;
     font-weight: bold;
}