A minimal markdown css

md.css

body {
    margin: 0 auto;
    font-family: Georgia, Times, serif;
    color: #444;
    max-width: 800px;
    font-size: 18px;
    line-height: 1.4em;
}
/* mobile view */
@media (max-width: 600px) {
    body {
        font-size: 16px;
        line-height: 1.2em;
        padding: 0 1em;
    }
}
/* image */
img {
    max-width: 98%;
}
figcaption {
    line-height: 0;
    text-align: center;
    font-family: sans-serif;
    font-size: 90%
}
/* code */
pre {
    overflow-x: auto;
    background-color: #f9f9f9;
    padding: 0.6em;
}
/* blockquote */
blockquote {
    color: #777;
    font-style: italic;
    margin: 1em 0.8em;
    padding-left: 0.8em;
    border-left: 0.3em solid #ccc
}
/* table */
table {
    float: center;
    font-family: sans-serif;
    font-size: 90%;
}
table, th, td {
    border: 1px solid grey;
}
th, td {
    padding: 0.3em;
}
/* footntoe */
.footnotes {
    font-size: 90%;
}