html, body{
    margin:0px;
    z-index:-1000;
    width:100%;
    height:100%;
    overflow:hidden;
	position: relative;
}
.forme-fixe{
    background : linear-gradient(to bottom, #01add3, #b7e7f2);
    width:100%;
    height:100%;
    overflow:hidden;
    z-index:-1000;
    position:fixed;
}
footer {
	position: absolute;
	bottom: 0;
	alignment-adjust: central;
	width: 100%;
}