#gridx {
	display: grid;
	width:150px;
	height:150px;
	grid-template: repeat(3, 1fr) / repeat(3, 1fr);
	border:1px solid #888;
}
#gridx .ex1{
	background-color:orange;
	grid-area: 1 / 1 / 3 / 3;
	opacity:0.3;
}
#gridx .ex2{
	background-color:lightblue;
	grid-area:2/2/4/4;
	opacity:0.3;
}
#gridx .ex3{
	background-color:green;
	grid-area: 1 / 3 / 1 / 4;
	opacity:0.3;
}
#gridx .ex4{
	background-color:black;
	grid-area:3/1/4/1;
	opacity:0.3;
}