web/postgresql.org/reference/site/media/css/markdown_preview.css

div.markdownpreview {
   margin-top: 2px;
   border: 1px solid black;
   float: left;
   overflow: auto;
}

div.markdownpreview p {
   margin-left: 0px !important;
   padding-left: 0px !important;
}

/* Override some things from django admin interface */
div.adminmarkdownpreview h2 {
    background: none !important;
    color: rgb(102, 102, 102) !important;
    font-size: 22px !important;
}

div.adminmarkdownpreview ul,ol {
   margin-left: 0px !important;
}