body {background-color:#FFF;font-size:1.5em;}
h1 {text-align:center;}
input[type=text] {width:80%;height:50px;font-size:1em;}
input[type=submit] {height:50px;font-size:1em;}
p.warning {color:red;}
img {text-align:center;}
p.presentation {text-align:center;}
#container {width:80%;margin:0 auto;}