.tanchu {
display: none;
position: absolute;
top: 20%;
left: 10%;
width:80%;
height:60%;
border:6px solid #d1d1d1;
background:#ffffff;
z-index:1002;
overflow: auto;
padding:10px;
}
.tanchu li {
    width:95%;
	height:auto;
	float:left;
}

.guanbi {
    float:right;
	font-size:14px;
}