.logo {
	filter: drop-shadow(0px 0px 25px rgba(255,255,255,0.5));
}

.background {
	background: no-repeat fixed;
	background-color: #191919;
	background-size: auto 100% ;
	background-position: top center; 
}
#start.background, #end.background {
	background-image: url("/assets/img/covid/1.jpg");
}
#measure.background {
	background-image: url("/assets/img/covid/2.jpg");
}
#operate.background, #colaborate.background {
	background-image: url("/assets/img/covid/3.jpg");
}
#removal.background, #employeedown.background {
	background-image: url("/assets/img/covid/4.jpg");
}
#clientmix.background {
	background-image: url("/assets/img/covid/5.jpg");
}
#clientlimit.background {
	background-image: url("/assets/img/covid/6.jpg");
}

.section .card {
	background: #000000a6;
}

/*iPhone X*/
@media only screen 
and (min-device-width : 375px) 
and (max-device-width : 812px)
and (-webkit-device-pixel-ratio : 3)  {
	.background {
		background-attachment:scroll!important;
	}
}
/*iPhone 6,7,8*/
@media only screen 
and (min-device-width : 375px) 
and (max-device-width : 667px) {
	.background {
		background-attachment:scroll!important;
	}
}
/*iPhone 6,7,8 plus*/
@media only screen 
and (min-device-width : 414px) 
and (max-device-width : 736px) {
	.background {
		background-attachment:scroll!important;
	}
}