body {
	margin: 0;
	padding: 0;
	overflow-x: hidden;
}

#img_box {
	width: 100vw;
	height: 100vh; 
	overflow-x: hidden;
	position: relative;
}

#img_box img {
	position: absolute;
	left: 50%;
	transform: translate(-50%, 0);
}

@media screen and (min-width: 1200px) {
    #img_desktop {
        display: initial;
    }
    #img_tablet {
        display: none;
    }
    #img_mobile {
        display: none;
    }
}

@media screen and (max-width: 1199px) and (min-width: 768px) {
    #img_desktop {
        display: none;
    }
    #img_tablet {
        display: initial;
    }
    #img_mobile {
        display: none;
    }
}

@media screen and (max-width: 767px) {
    #img_desktop {
        display: none;
    }
    #img_tablet {
        display: none;
    }
    #img_mobile {
        display: initial;
    }
}