@media screen and (min-width: 300px){
/* 	共通 */
	body{min-width:300px;}
	header{height: 120px;}
	@media screen and (min-width: 300px){
		#btn_to_caution{
			left:30px;
			top:410px;
		}
		#btn_init_cnf{
			left:170px;
			top:410px;
		}
	}
	@media screen and (min-width: 400px){
		#btn_to_caution{
			left:30px;
			top:410px;
		}
		#btn_init_cnf{
			left:170px;
			top:410px;
		}
	}
}
@media screen and (min-width: 700px){
/* 	共通 */
	body{min-width:700px;}
	@media screen and (min-width: 700px){
		#btn_to_caution{
			left:30px;
			top:410px;
		}
		#btn_init_cnf{
			left:170px;
			top:410px;
		}
	}
	@media screen and (min-width: 1024px){
		#btn_to_caution{
			left:30px;
			top:410px;
		}
		#btn_init_cnf{
			left:170px;
			top:410px;
		}
	}
}
@media screen and (min-width: 1900px){
/* 	共通 */
	body{min-width:1900px;}
	@media screen and (min-width: 1900px){
		#btn_to_caution{
			left:30px;
			top:410px;
		}
		#btn_init_cnf{
			left:170px;
			top:410px;
		}
	}
	@media screen and (min-width: 2800px){
		#btn_to_caution{
			left:30px;
			top:410px;
		}
		#btn_init_cnf{
			left:170px;
			top:410px;
		}
	}
}