.one{
    height: 100%;
}

.two {
    height: 50%;
}

.three {
    height: 25%;
}

.t_fullPage{
	display: table;
	width: 100%;
	height:100vh;
}
.t_halfPage{
	display: table;
	width: 100%;
	height: 65vh;	
}

.t_quarterPage{
	display: table;
	width: 100%;
	height: 25vh;	
}

/*Viewport=600x*/
@media screen and (max-width: 37.5em) {
.t_halfPage{
	display: table;
	width: 100%;
	height: 100vh !important;	
}
}
/*Viewport=480px*/
@media screen and (max-width: 30em) {
.t_halfPage{
	display: table;
	width: 100%;
	height: 100vh !important;	
}
}

/*Viewport=320px*/
@media screen and (max-width: 20em) {
.t_halfPage{
	display: table;
	width: 100%;
	height: 100vh !important;	
}
}