#wp-calendar
{
text-align: center;
width: 80%;
border-collapse: collapse;
padding: 0;
margin: 0 20px;
font-size: 12px;
}

#wp-calendar caption a, #wp-calendar caption a:hover
{
background: transparent;
}

#wp-calendar th
{
font-weight: bold;
}

#wp-calendar a
{
text-decoration: none;
display: block;
color: black;
}

#wp-calendar td, #wp-calendar th
{
text-align: center;  
}

#wp-calendar tbody td a
{
text-decoration: underline;
background-color: #ccc;
}

#wp-calendar caption
{
padding: 0.2em 1em 0.2em 0em;
font-weight: bold;
text-align: center;
font-size: 12px;
}