.abtop{
	margin:0;
	width:100%;
	background:url(../img/bg_abouttop.jpg) repeat-x;
	background-size:auto 100%;
}

.text{font-size:24px;}
.text img{float:right;}
.btn_area{
	margin:6% auto;
	width:84%;
}
.btn_area img{
	width:100%;
}

.bg_how{
	width:100%;
	background:url(../img/bg_how.png) repeat-x;
	background-size:auto 100%;
}

.list_how{ margin:1.5% auto 0;}
.list_how li{
	margin:0 0 1.5% 1%;
	width:32%;
	float:left;
}

/********************************
screen_width_780px
********************************/
@media screen and (max-width: 780px) {
}


/********************************
screen_width_580px
********************************/
@media screen and (max-width: 580px) {

}

/********************************
screen_width_480px
********************************/
@media screen and (max-width: 480px) {
	.text{font-size:14px;}
	.text img{float:none; display:block; margin: 0 auto 10px;}
}