Markdown CSS form

This is CSS form for Markdown.

/* Common styles */
body {
    font-family: Helvetica, Arial, Freesans, clean, sans-serif;
    padding:1em;
    margin:auto;
    max-width:42em;
    background:#fefefe;
}

/* # ~ ###### Common styles */
h1, h2, h3, h4, h5, h6 {
    font-weight: bold;
}

/* # */
h1 {
    color: #000000;
    font-size: 28px;
}

/* ## */
h2 {
    border-bottom: 1px solid #CCCCCC;
    color: #000000;
    font-size: 24px;
}

/* ### */
h3 {
    font-size: 18px;
}

/* #### */
h4 {
    font-size: 16px;
}

/* ##### */
h5 {
    font-size: 14px;
}

/* ###### */
h6 {
    color: #777777;
    background-color: inherit;
    font-size: 14px;
}

/* *** */
hr {
    height: 0.2em;
    border: 0;
    color: #CCCCCC;
    background-color: #CCCCCC;
}

/* >, - */
p, blockquote, ul, ol, dl, li, table, pre {
    margin: 15px 0;
}

code, pre {
    border-radius: 3px;
    background-color: #F8F8F8;
    color: inherit;
}

/* ` ` */
code {
    border: 1px solid #EAEAEA;
    margin: 0 2px;
    padding: 0 5px;
}

pre {
    border: 1px solid #CCCCCC;
    line-height: 1.25em;
    overflow: auto;
    padding: 6px 10px;
}

pre > code {
    border: 0;
    margin: 0;
    padding: 0;
}

/* []() */
a, a:visited {
    color: #4183C4;
    background-color: inherit;
    text-decoration: none;
}