body {
    margin-left: auto;
    margin-right: auto;
    max-width: 50em;
    padding: 2em; 
}
/* defaults for block content */
body * {
    font-family: "Open Sans", Arial, serif;
    -webkit-font-smoothing: antialiased; 
    -moz-osx-font-smoothing: grayscale;
    line-height: 1.4em;
    margin: 0px;
    padding: 0px;
}
body > *,
div > * { margin-bottom: 1em;}
/* headings */
h1, h2, h3, h4, h5, h6 { font-family: "Century Gothic", Tahoma, Arial, sans-serif; font-weight: 600;}
/* links */
a {color: blue;}
a:hover,
a:focus {text-decoration: none;}
/* lists */
ol,
ul { margin-left: 2em; margin-top: 1em; margin-bottom: 1em;}
ol,
ul { list-style-type: disc; list-style-position: outside;}
li { margin: 0;}
p.subtitle { margin-top: 0px; padding-top: 0px;}
/* code */
.code {
    font-family: Consolas, Monaco, "Lucida Console", "Liberation Mono", "DejaVu Sans Mono", "Bitstream Vera Sans Mono", "Courier New", sans-serif;
    background-color: #DDDDDD;
    padding: 2px;}
div.code {
    padding: 1em;
}
.field {
    font-family: Consolas, Monaco, "Lucida Console", "Liberation Mono", "DejaVu Sans Mono", "Bitstream Vera Sans Mono", "Courier New", sans-serif;
    background-color: #FFDDDD;
    padding: 2px;}