#mail_list{
	padding : 10px 50px 10px 120px;
	}
#st11{
	margin: 0 auto 0 auto;
	width: 720px;
	height: 240px;
	font-size: 20px;
	font-weight: bold;
	}
#address{
	margin: 0px auto 0px auto;
	width: 720px;
	height: 520px;
	border-color:#000000;
	border-width:2px;
	border-style:solid;
	}
.txt1{
    display: inline-block;
    width: 26%;
    border: 2px solid #000;
    box-sizing: border-box;
    background: #f2f2f2;
}
.txt2{
    display: inline-block;
    width: 35%;
    border: 2px solid #000;
    box-sizing: border-box;
    background: #f2f2f2;
}