html
{
margin:0;
padding:0;
background-color:lightgrey;
}

body
{
font-size:120%;
margin:4% 4% 4% 4%;
background-color:white;
}

h1
{
text-align:center;
font-size:140%;
font-weight:bold;
text-shadow:3px 3px 5px lightgrey;
}

.retrait
{
text-indent:2%;
}