.content{width: 1000px; background: url(bg1.jpg);}
.content p,.content h4{line-height: 24px;}

.img1{width: 236px;height: 177;margin-left: 73px;}


.middle{margin: 0 auto;}
.left{float: left;}
.ti2{text-indent: 2em;}
.br1{border-bottom: black 4px solid;}
.m10{margin: 10px;}
.mt10{margin-top: 10px;}
.mt20{margin-top: 20px;}
.ml10{margin-left: 10px;}
.ml73{margin-left: 73px;}
.mb10{margin-bottom: 10px;}
.w660{width: 660px;}
.w697{width: 697px;}