body {
    background: #fff;
}

ul {
    border-left: solid 4px #00c;
    color: #33c;
    font-weight: bold;
    margin: 1em;
    padding: 1em;
    background: white;
}

li {
    color: black;
    font-weight: normal;
    list-style-type: none;
    margin-left: 1em;
    font-family: monospace;
}

.mail_parameter_value {
    color: black;
    margin-left: 1em;
}

.div_block {
    background: #eef;
    padding-top: 1em;
    padding-bottom: 1em;
}