.topics{
	width:440px;
	height:auto;
	margin:0;
	padding:0;
}

.topics_img1{
	width:440px;
	height:auto;
	margin-bottom:2px;
}

.topics_img2{
	width:440px;
	height:auto;
	margin-bottom:2px;
}

.topics_img3{
	width:440px;
	height:auto;
	margin-bottom:2px;
}