.cont_slide{
width: 100%;
height: 306px;
overflow: hidden;
text-align: left;
}
.cont_slide img{
position: absolute;
width: 100%;
height: 306px;
}
@media screen and (max-width: 840px){
	.sp-slideshow { height: 345px; }
}
@media screen and (max-width: 680px){
	.sp-slideshow { height: 285px; }
}
@media screen and (max-width: 560px){
	.sp-slideshow { height: 235px; }
}
@media screen and (max-width: 320px){
	.sp-slideshow { height: 158px; }
}