.a, .b, .c, .d {
	height:100%;
	display:-moz-inline-box;
	float:left;
	display: inline-block;
}
.a {background: #7CAFE7; width: 5%;}
.b {background: #E7897C; width: 10%;}
.c {background: #ABE77C; width: 20%;}
.d {background: #D37CE7; width: 40%;}
.opana {height: 300px;}