.fl {
	float:left
}
.fr {
	float:right
}
/*清除浮动*/
.clearfix:before,.clearfix:after{ 
    content:""; 
    display:table; 
} 
.clearfix:after{clear:both;} 
.clearfix{ 
    *zoom:1;/*IE/7/6*/ 
} 

.upload {
	position: relative;
	margin: 10px;
	padding: 10px;
	box-sizing: border-box;
	width: 100px;
	height: 100px;
	cursor: pointer;
	background-color: rgba(0, 0, 0, .5);
}

.uploadbox {
	background: url(../img/bg_img.png) no-repeat;
	background-size: auto 60%;
	background-position: center center;
	border: 2px solid #ddd;
}

.preview {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
}

.control {
	display: none;
	position: absolute;
	top: 0;
	right: 0;
}

.control img {
	width: 20px;
	height: 20px;
	background-color: rgba(0, 0, 0, .6);
	cursor: pointer;
}