moodle/theme/formfactor/style/editor.css

body, h1, h2, h3, h4, h5, h6, p, ul, ol, dl, input, textarea {
    font-family: "Trebuchet MS", Arial, Helvetica, sans-serif;
}
.small {
    font-size: .8em;
    margin-bottom: 1.875em;
    line-height: 1.875em;
}
.large {
    font-size: 1.25em;
    line-height: 1.5em;
    margin-bottom: 1em;
}
.quiet {
    color: #999;
}
.hide {
    display: none;
}
.highlight {
    background: #ffc;
}
.top {
    margin-top: 0;
    padding-top: 0;
}
.bottom {
    margin-bottom: 0;
    padding-bottom: 0;
}