.diaporama1{
width: 1000px; 
height: 377px;
margin-left:auto;
margin-right:auto;
margin-top:20px;
margin-bottom:0px;
padding-right:0px;
padding-top:0px;
padding-left:0px;
padding-bottom:0px;
background-image: url("img/1.jpg");

webkit-animation-name: diapo1;
webkit-animation-duration: 25s;
webkit-animation-timing-function: linear;
webkit-animation-iteration-count: infinite;
webkit-animation-direction: normal;

moz-animation-name: diapo1;
moz-animation-duration: 25s;
moz-animation-timing-function: linear;
moz-animation-iteration-count: infinite;
moz-animation-direction: normal;

animation-name: diapo1;
animation-duration: 25s;
animation-timing-function: linear;
animation-iteration-count: infinite;
animation-direction: normal;

}

@-webkit-keyframes diapo1{
	0%{background-image: url("img/1.jpg");}
	33%{background-image: url("img/4.jpg");}
	66%{background-image: url("img/2.jpg");}
}

@-moz-keyframes diapo1{
	0%{background-image: url("img/1.jpg");}
	33%{background-image: url("img/4.jpg");}
	66%{background-image: url("img/2.jpg");}
}

@keyframes diapo1{
	0%{background-image: url("img/1.jpg");}
	33%{background-image: url("img/4.jpg");}
	66%{background-image: url("img/2.jpg");}

}