body,html{
  margin:0;
  padding:0
  
}
.qrcode {
  height: 300px;
  width: 300px;
  background:white;
  font-family:"Microsoft Yahei";
  line-height:300px;
  text-align:center;
  position:relative;
}
.qrcode2{
  height: 300px;
  width: 300px;
  background:white;
  margin:50px;
  font-family:"Microsoft Yahei";
  line-height:300px;
  text-align:center;
  position:relative;
}


.text{
  height: 25px;
  line-height: 25px;
  width: 300px;
  margin-top:50px;
  margin-left: 25px;
  width: 350px;
  height:150px;
  font-family:"Microsoft Yahei";
  resize:none;
}
.big_box{
  width:800px;
  height:420px;
  position:absolute;
  z-index:99;
}
.box_left{
  width:50%;
  height:inherit;
  float:left;
  background-color:#E0E0E0;
}
.box_right{
  width:50%;
  height:inherit;
  float:left;
  background-color:#E0E0E0;
}
.build_btn{
  width:300px;
  margin-left:50px;
}
.text_length{
  margin:0;
  margin-left:50px;
  font-family:"Microsoft Yahei";
}
.back_color{
  /* margin-left:50px; */
  /* margin-top:20px; */
  width: 100%;
  height: calc(100% - 35px);
  float: left;
}
.back_color div{
  float:left;
  font-family:"Microsoft Yahei";
}
.back_color input{
  float:left;
  font-family:"Microsoft Yahei";
}
.back_div{
  width: 350px;
  height:110px;
  background-color:white;
  margin-left: 25px;
  margin-top:10px;
}
.change{
  width:100%;
  height:35px;
  float: left;
  background-color:silver;
}
.back_color_c{
  width:70px;
  height:30px;
  font-family:"Microsoft Yahei";
  font-size:16px;
  line-height:33px;
  text-align:center;
  float:left;
  border-radius:10px 10px 0px 0px;
  margin-top:5px;
  margin-left:10px;
  cursor:pointer;
}
.back_img_c{
  width:70px;
  height:30px;
  font-family:"Microsoft Yahei";
  font-size:16px;
  line-height:33px;
  text-align:center;
  float:left;
  border-radius:10px 10px 0px 0px;
  margin-top:5px;
  margin-left:10px;
  cursor:pointer;
}
.back_img{
  /* margin-left:50px; */
  /* margin-top:20px; */
  width: 100%;
  height: calc(100% - 35px);
  float: left;
}
.back_img div{
  float:left;
  font-family:"Microsoft Yahei";
}
.back_img input{
  float:left;
  font-family:"Microsoft Yahei";
}
.show_img{
  width:86px;
  height:66px;
  background-size:100% 100%;
  position:absolute;
  top:0px;
  left:0px;
  margin:2px;
}