demo.css

/* if you want images to drop a shadow */
img {
    box-shadow: 10px 10px 5px #888;
}

/* if you want "fleurons" instead of bullets in unordered lists */
ul {
    padding-left:1em;
    list-style:none;
    margin-left:0;
    text-indent:-1em;
}

ul li:before {
    content:"\2767\0020"; /* 2767 is unicode value of the fleuron; see en.wikipedia.org/wiki/List_of_Unicode_characters */
    font-size:.75em;
    display:block;
    float:left;
    width:1.33em;
}

/* if you want a dotted box around blockquotes */
blockquote {
    border: 1px dotted #900;
}

/* use <div class="two-columns">…</div> for two-column text */
.two-columns {
    -moz-column-count: 2; /* you have to use the "vendor prefix" because this isn't widely adopted yet */
    -moz-column-gap: 20px;
    -webkit-column-count: 2;
    -webkit-column-gap: 20px; 
    column-count: 2;
    column-gap: 20px;
}