/*Distribución*/
.undiv		{	width:100%; height:auto; padding:1%; float:left; margin-top:30px; margin-bottom:30px;			/*border:1px solid gray;*/	}
.dosdiv		{	width:47.5%; height:600px; padding:1%; float:left; margin-top:30px; margin-bottom:30px;			/*border:1px solid blue;*/	}
.tresdiv	{	width:31%; height:600px; padding:1%; float:left; margin-top:30px; margin-bottom:30px;			/*border:1px solid green;*/	}

/*Alineación elementos*/
.undiv		{	text-align:center;	}
.dosdiv		{	text-align:left;	}
.dosdiv a	{	text-align:center; /*display:inline-block;*/ width:100%; font-size:20px;	 	}
.tresdiv p	{	text-align:left;	}
.tresdiv a	{	text-align:center; display:inline-block; width:100%; font-size:20px;	 	}


/*Responsive*/
@media screen and (max-width:1100px)
{
	.dosdiv		{	width:100%; height:auto; margin-top:150px; 	}
	.tresdiv	{	width:100%; height:auto; margin-top:150px;	}
	.cuatrodiv	{	width:100%; height:auto;	}
}
/*HTML required

<div id="w1">
	<div id='a2'>
	</div>
	<div id="a1">
	</div>
	<div id='b1'>
	</div>
	<div id='c1'>
	</div>
</div>

*/