body {background-color:rgb(240,240,240);text-align:center;width:800px;margin:auto;}
header, section, article, nav, footer, hgroup {display:block;}
header hgroup{border:5px outset blue;padding:5px;}
footer {border:3px outset blue;}
header h1, header h6, footer *{margin:0;padding:0;}
canvas {margin:auto;}
a {text-decoration:underline overline; font-weight:bold;}
ol {text-align:left;background-color:rgb(250,250,250);margin:20px;padding-bottom:20px;padding-top:20px;}
li.conseil {font-style:italic;background-color:rgb(0,255,0);}