html, body 
{
 margin:0;
 padding:0;
 }
 
 body {
 width: 100%;
 height:100%;
 background-color: black;
 font-family: time roman;
 font-size: 100%;
}

h1 {
 font-size: 150%; 
 font-style: italic;
 color: white; 
 text-align: center;
 }
 
h2 {
 font-size: 140%;
font-style: italic; 
 color: white; 
 text-align: center;
 }
 
 h3 {
 font-family: arial;
 font-style:normal;
 font-size: 70%; 
 color: white; 
 text-align: center;
 }
 
 
 .Blanc {
 color: #ffffff;
 font-size: 100%;
 font-weight: bolder; 
 }
 
a
{
color: white;
text-decoration: none;
}