.prevent-events{
	opacity: 0.5;
	pointer-events: none;
}
.background-screen{
	min-height: 100vh;
	width: 100vw;
	background-position: center;
	background-repeat: no-repeat;
	background-size: cover;
	position: fixed;
	z-index: -999999999;
    top: 0px;
    bottom: 0px;
    right: 0px;
    left: 0px;
}
.background-fixed{
	height: 100%;
	width: 100%;
	background-position: center;
	background-repeat: no-repeat;
	background-size: cover;
	position: fixed;
	z-index: -999999999;
}
.background-mask{
	min-height: 100vh;
	width: 100vw;
	position: fixed;
	z-index: -999999999;
    top: 0px;
    bottom: 0px;
    right: 0px;
    left: 0px;
}

.horizontal-center{
	display: flex;
	justify-content: center;
}
.vertical-center{
	margin: 0;
	position: absolute;
	top: 50%;
	-moz-transform: translateY(-50%);
	-o-transform: translateY(-50%);
	-ms-transform: translateY(-50%);
	-webkit-transform: translateY(-50%);
	transform: translateY(-50%);
}
.vertical-middle{
    min-height: 50vh;
    display: flex;
    align-items: center;
}