I have a webpage that displays a calendar, and I want to change the background-color of any td that has their day number linked, so when I hover over that day, it changes the background-color.

I thought this would work:

.main-calendar td {
    width:14%;
    height:100px;
    text-align:center;
    border:1px solid #000;
    font-size:20px;
    vertical-align:middle;
    display:block;
}

table.main-calendar td a:hover,
table.main-calendar td a:visited {
    display:block;
    text-decoration:none;
    background-color:red;
    color:#fff;
}

table.main-calendar td a:link {
    display:block;
    text-decoration:none;
    background-color:green;
    color:#fff;
}

Any help is appreciated.