diff_reader.css

pre.diff {
overflow: auto;
border: 1px solid #000000;
}

pre.diff ins,
pre.diff del {
display: block;
text-decoration: none;
}

pre.diff ins {
background-color: #88ff88;
}

pre.diff del {
background-color: #ff8888;
}

pre.diff address {
font-style: normal;
border-bottom: 1px solid #000000;
background-color: #eeeeee;
}