body{margin: 0;padding: 0;background-color: lightgray;font-size:15px;}
.content_div{width: 800px;height: auto;min-height: 850px;margin-top: 30px;border: 1px groove;background-color: white;}
.content_title{width: 150px;height: 50px;border-bottom: 2px blue groove;text-align: center;margin-top: 20px;line-height:50px;font:18px;}
.content_form{width: 100%;height: 600px;margin-top:30px;text-align: left;padding: 0 10px}
.span_red{color: red;vertical-align:top}
.form_title{width: 650px;height:30px;}

.form_tr{width: 100%;min-height: 30px;height:auto;margin-top:25px;}

.f_organize{width: 200px;height: 30px;}
.prochoice{width: 100px;height: 30px;}
.citychoice{width: 100px;height: 30px;}
.f_hostlocation{width: 200px;height: 30px;}

.span_content{display:block;position: absolute;top:0px;}
.f_comtacts{width: 80px;height: 30px;}
.f_comtactnum{width: 150px;height: 30px;}
.f_enddate{width: 150px;height: 30px;}
.f_explainstr{width: 645px;height: 420px;resize:none;overflow-y: scroll;}

.btn_div{width: 100%;height: 50px;margin-top: 20px;text-align: right;}
.btn{width: 45px;height: 30px;margin-right:80px; }