header{
	position: absolute; Top: 0; left:0; right:0
}

@font-face {
font-family: 'aristotle_punk';
src: url('Media/Font/AristotlePunk.otf');
src: url('Media/Font/AristotlePunk.ttf') format('truetype');
font-weight: normal;
font-style: normal;
}

#conteneurhead
{
	display:flex;
	flex-direction:row;
	flex-wrap:nowrap;
	justify-content: space-around;
    align-content: center;
	align-items: center;
	background-color:black;
	width: 100%;
	height:5em;
}

.titre_principal:nth-child(1)
{
	order:2;
	flex:1;
	align-self: center;
    text-align: center;
	font-size: 25px;

}
.Logo:nth-child(1)
{
	order:1;
    margin:auto;
	background-color: black;
    border: none !important;
    
    
}
.Logo img
{
	   
    background: transparent;
    
}
.titre_principal img


{
	width: 500px;
	height: 300px ;
    
}

.openB:nth-child(3)
{
	order:3;
	background: transparent;
	font-size:30px;
	color: #720000;
	border:none;
	margin-right:70px;
	font-family: "aristotle_punk", sans-serif;
}


/* The Overlay (background) */
.overlay {
    /* Height & width depends on how you want to reveal the overlay (see JS below) */    
    height: 0%;
    width: 100%;
    position: fixed; /* Stay in place */
    z-index: 1; /* Sit on top */
    top: 0;
	left: 0;
    background-color: black; /* Black fallback color */
    background-color: black; /* Black w/opacity */
    overflow-y: hidden; /* Disable horizontal scroll */
    transition: 0.5s;
	color: #720000;
  	font-family:"Verdana", sans-serif;/* 0.5 second transition effect to slide in or slide down the overlay (height or width, depending on reveal) */
}

/* Position the content inside the overlay */
.overlay-content {
    position: relative;
    top: 20%; /* 25% from the top */
    width: 100%; /* 100% width */
    text-align: center; /* Centered text/links */
    margin-top: 30px; /* 30px top margin to avoid conflict with the close button on smaller screens */
	color: #720000;
  	font-family:"Verdana", sans-serif;
}

/* The navigation links inside the overlay */
.overlay a {
    padding: 8px;
    text-decoration: none;
    font-size: 36px;
    color: #720000;
    display: block; /* Display block instead of inline */
    transition: 0.3s;
  	font-family:"Verdana", sans-serif;/* Transition effects on hover (color) */
}

/* When you mouse over the navigation links, change their color */
.overlay a:hover, .overlay a:focus {
    color: #720000;
}
.clavier {
	top: 60px;
    right: 145px;
	
}

/* Position the close button (top right corner) */
.overlay .closebtn {
    position: absolute;
    top: 20px;
    right: 45px;
    font-size: 60px;
  
}

/* When the height of the screen is less than 450 pixels, change the font-size of the links and position the close button again, so they don't overlap */
@media screen and (max-height: 450px) {
    .overlay a {font-size: 20px}
    .overlay .closebtn {
        font-size: 40px;
        top: 15px;
        right: 35px;
    }
}