html {
      color: #505050;
      background-color: white;
      font-family: "Trebuchet MS", sans-serif;
}

body {
    margin: 5ex;
    font-size: 11pt;
}    

/* hyperlinks to external sites (http://) will get an arrow behind them (CSS3 selector) */
a[href^="http://"]:after {
    content: "\BB";
}

/* hyperlinks with an onclick will get a button-like appearance */
a[onclick]:before {
    content: "[";
}
a[onclick]:after {
    content: "]";
}

a:link, a:visited {
    color: purple;
    text-decoration: none;
    border-bottom: dotted 1px; 
}
a:hover {
    color: white;
    background-color: maroon;
}

canvas {
      border: solid blue 1px;
}