Render Markdown as unrendered Markdown (see http://jsbin.com/huwosomawo)

markdown.css

* {
    font-size: 12pt;
    font-family: monospace;
    font-weight: normal;
    font-style: normal;
    text-decoration: none;
    color: black;
    cursor: default;
}

h1::before { content: "# "; }
h2::before { content: "## "; }
h3::before { content: "### "; }
h4::before { content: "#### "; }
h5::before { content: "##### "; }
h6::before { content: "###### "; }
strike::after, strike::before { content: "~~"; }
i::before, i::after { content: "*"; }
b::before, b::after { content: "**"; }
ol, ul { list-style: none; padding-left: 0; }
ul li::before { content: "* "; }
ol li::before { content: "1. "; }
code::before, code::after { content: "`"; }
pre::before { content: "```" attr(lang) "\A"; }
pre::after { content:"```\A"; }
a::before { content: "["; }
a::after { content: "](" attr(href) ")"; }
tr::before { content: "| "; }
td::after { content: " | "; }
thead td::after { content: " | \A-----| "; white-space: pre; }