@media screen and (max-width:1100px){
	section.center_presentation div.about{
		margin-bottom:1.5em;
	}
	section.all_formation div.all_formation_presentation{
		margin-bottom:0px;
	}
	section.all_formation div.all_formation_presentation p{
		width:90%;
		border:none;
		padding-left:0px;
		padding-right:0px;
	}
}

@media screen and (max-width:900px){
	section.center_presentation div.about{
		margin-bottom:1.5em;
	}
	section.all_formation div.all_formation_presentation{
		margin-bottom:0px;
	}
	section.all_formation div.all_formation_presentation p{
		width:90%;
		border:none;
		padding-left:0px;
		padding-right:0px;
	}
}

@media screen and (max-width:750px){
	section.all_formation article{
		width:300px;
		height:500px;
	}
}

@media screen and (max-width:650px){
	section.all_formation div.formation_poster{
		margin-bottom:1em;
		height:120px;
	}
	section.all_formation{
		justify-content:center;
	}
	section.all_formation article{
		margin-left:2px;
		margin-right:2px;
		margin-bottom:2em;
	}
}

@media screen and (max-width:550px){
	section.all_formation article{
		width:320px;
		height:500px;
	}
}


@media screen and (max-width:350px){
	section.all_formation article{
		width:300px;
	}
}