header, section, article, nav, footer, hgroup {display:block;}

body{width:100%;margin:auto;text-align:center;}
nav ul {list-style:none;padding:0;}
nav ul li, form {display:inline;}
nav ul li input[type=text]{width:8%;text-align:center;}
table,tr {width:100%;}
td {width:10%;background-color:rgb(240,240,240);padding:1%;}
footer a {text-decoration:underline overline;color:red;font-weight:bold;}
.erreur {color:red;}