main/public_html/css/header.css

/* Header Icon */
#HEADER #header-icon{
	display: block;
	position: absolute;
		top: 0;
		left: 0;
		width: calc( 15em - 3em );
		height: calc( 100% - 2*1em );

	padding: 1em 0;
	padding-left: 3em;

	background: url('/image/header-icon.svg@555555') center left 2em no-repeat;
	background-size: 1.7em;
	/* background-color: rgba(0,0,0,.7); */

	color: #fff;
}

/* Header Icon > Title */
#header-icon .header-title{
	display: inline-block;
	position: relative;
	margin-left: 2em;

	font-size: 1.2em;
	letter-spacing: 2px;

	background: -webkit-linear-gradient(top left, #474dff, #00E288);
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;

	overflow: hidden;
}



/****************************/


/* Header info container */
#header-info{
	display: block;
	position: absolute;
		top: 0;
		left: 15em;
		width: calc( 100% - 15em - 12em - 2em - 5em );
		height: calc( 100% - 2*1.2em );

	padding: 1.2em 0;
	padding-left: 5em;
	background: url('/image/header/info/info.svg@2299e3') center left 2em no-repeat;
	background-size: 1.6em;
}

#header-info.info{    background-image: url('/image/header/info/info.svg@2299e3');    }
#header-info.warning{ background-image: url('/image/header/info/warning.svg@ed5e17'); }
#header-info.error{   background-image: url('/image/header/info/error.svg@d7373a');   }


/****************************/



/* Header Notifications */
#header-notif{
	display: flex;
	position: absolute;
		top: 0;
		left: calc( 100% - 12em - 2em ); /* 2em not to be in the border */
		width: 12em;
		height: 100%;

	/* flex */
	flex-direction: row;
	justify-content: space-around;
	align-items: center;
	flex-wrap: nowrap;

	overflow: hidden;
}

/* Notification element */
#header-notif .hnotif,
#header-notif .hnotif.bell{
	display: block;
		width: 2em;
		height: 2em;

	background: url('/image/header/notif/bell.svg@aaaaaa') center center no-repeat;
	background-size: 50%;
	background-color: transparent;

	border-radius: 50% / 50%;

	cursor: pointer;

	transition: background .2s ease-in-out;
}
#header-notif .hnotif.message{ background-image: url('/image/header/notif/message.svg@aaaaaa'); }
#header-notif .hnotif.search{  background-image: url('/image/header/notif/search.svg@aaaaaa');  }
#header-notif .hnotif.menu{    background-image: url('/image/header/notif/menu.svg@aaaaaa');    }

/* HOVER */
#header-notif .hnotif:hover{
	background-color: #ddd;
	background-image: url('/image/header/notif/bell.svg@ee9a31');
}

#header-notif .hnotif.message:hover{ background-image: url('/image/header/notif/message.svg@23c795'); }
#header-notif .hnotif.search:hover{  background-image: url('/image/header/notif/search.svg@ae51da');  }
#header-notif .hnotif.menu:hover{    background-image: url('/image/header/notif/menu.svg@4a8ad8');    }



/* Counter element */
#header-notif .hnotif[data-count]:before{
	content: attr(data-count);

	display: block;
	position: absolute;
		margin-left: 1.2em;
		min-width: calc( 1.4em - 2*.35em );
		width: auto;
		height: calc( 1.4em - 2*.1em );

	padding: .1em .35em;

	border-radius: 50% / 50%;
	background: #ed4222;

	font-size: .8em;

}

#header-notif .hnotif[data-count='']:before,
#header-notif .hnotif[data-count='0']:before{
	display: none;
}