html, body{
    height:100%;
}

img {
	width:100%;
    opacity: 0.6;
  transition: opacity 1s ease-in-out;
  -moz-transition: opacity 1s ease-in-out;
  -webkit-transition: opacity 1s ease-in-out;
}
img:hover {
    opacity: 1.0;
  transition: opacity 1s ease-in-out;
  -moz-transition: opacity 1s ease-in-out;
  -webkit-transition: opacity 1s ease-in-out;
}
section.section_1 {
    float: left;
    width: 100%;
    overflow: hidden;
    height: 100%;
}
main {
    height: 100%;
}
.box_show_room {
   background-size: cover;
    background-repeat: no-repeat;
    background-position: 50% 50%;
    height: 100%;
    display: table;
    width: 100%;
}
.section_1 h3 {
    display: table-cell;
    vertical-align: middle;
    text-align: center;
    margin: auto !important;
    height: 100%;
    color: white;
    text-transform: uppercase;
    font-size: 30px;
    font-weight: 700;
    position: absolute;
    top: 37%;
    text-align: center;
    width: 100%;
    z-index: 9999;
}
.bg_op:hover .box_show_room:after{
	background-color: transparent;
}
.bg_op:hover h3{
	display:none;
}
.bg_op > a {
    width: 100%;
    height: 100%;
    position: absolute;
    z-index: 9999;
}
a {
    color: white;
}
a:hover {
    color: white;
	text-decoration:none;
}  
.bg_op {
    height: 100%;
    float: left;
    width: 100%;
    position: relative;
    z-index: 999999 !important;
}

.section_1 .col-sm-4.col-xs-12 {
	padding-right: 7.5px;
    padding-left: 7.5px;
}
.section_1 .row {
    height: 100%;
}
.show_room_hn{
	 background-image: url('../images/hanoi-min.png');
}
.show_room_dn{
	 background-image: url('../images/danang-min.png');
}
.show_room_hcm{
	 background-image: url('../images/hochiminh-min.png');
}
.box_show_room:after {
    content: ' ';
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    background-color: rgba(0,0,0,.6); 
	 transition: 0.8s;
  
}
.box_show_room:hover:after {
    content: ' ';
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    background-color: rgba(0,0,0,.1); transition: 0.8s;
}
@media (max-width: 767px){
	.section_1 .col-sm-4.col-xs-12 {
		padding-right: 0;
		max-width: 100%;
		flex: 100%;
		margin-bottom: 1px;
	}
	html, body {
		height: auto;
	}
	body .box_show_room {
		height: 300px;
	}

}