body{width: 100%;margin: 0; padding:1em;background-color:#81acd9;}
a       {text-decoration: none; color: red; font-style: italic;font-size: 20px; font-weight: bold;}


.diapos_g {width: 25%; margin-top:1em; margin-left: 1em; margin-right:1em;margin-bottom: 5em; 
	padding:0;float: left;background-color:#81acd9;}
.diapos_d {width: 25%; margin-left: 1em; margin-right:2em; float: right;background-color:#81acd9;}

.ig {display: block;width: 100%;margin-top: 1em; padding:0;border: 1px solid black;}

.p4 {width: 40%;margin-top: 2em;margin-left: auto; margin-right: auto;text-align: center;}
.phare {display: block;position: absolute; top:-1em; left:1em;width:10%;margin-top: 1em;}

.sous-titre {width:70%;margin-left: auto; margin-right: auto; margin-top: 1em; margin-bottom: 1em;
	text-align: center;font-family: Arial, Serif; color: blue;}

.texte {width: 40%; margin-top: 10em; margin-left: auto; margin-right:auto; 
	font-family: Arial, Serif; font-weight: bold;}
.titre {display: block;width:50%;margin-left: auto; margin-right: auto;margin-top: 2em;}