.main{
 line-height:0;
}
.center{
position: relative;
 width:  360px; 
 height: 440px;
}

.back18{
 position: absolute;
 top:      0px; 
 left:     0px; 
 width:  360px; 
 height:  20px;
}
.back1{
 position: relative;
 top:    0px; 
 left:   0px; 
 width:  20px; 
 height: 20px;
}
.back2{
 position: relative;
 top:    0px; 
 left:   0px; 
 width:  40px; 
 height: 20px;
}
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.backg7{position:absolute;top:  300px;left:  140px;width:   20px;height:   20px;}
.backg8{position:absolute;top:  300px;left:  160px;width:   20px;height:   20px;}
.backg9{position:absolute;top:  300px;left:  180px;width:   20px;height:   20px;}
.backga{position:absolute;top:  300px;left:  200px;width:   20px;height:   20px;}
.backgb{position:absolute;top:  300px;left:  220px;width:   20px;height:   20px;}
.backgc{position:absolute;top:  300px;left:  240px;width:   20px;height:   20px;}
.backgd{position:absolute;top:  300px;left:  260px;width:   20px;height:   20px;}
.backge{position:absolute;top:  300px;left:  280px;width:   20px;height:   20px;}
.backgf{position:absolute;top:  300px;left:  300px;width:   40px;height:   20px;}
.backgg{position:absolute;top:  300px;left:  340px;width:   20px;height:   20px;}

.backh1{position:absolute;top:  320px;left:    0px;width:   20px;height:   20px;}
.backh2{position:absolute;top:  320px;left:   20px;width:   40px;height:   20px;}
.backh3{position:absolute;top:  320px;left:   60px;width:   20px;height:   20px;}
.backh4{position:absolute;top:  320px;left:   80px;width:   20px;height:   20px;}
.backh5{position:absolute;top:  320px;left:  100px;width:   20px;height:   20px;}
.backh6{position:absolute;top:  320px;left:  120px;width:   20px;height:   20px;}
.backh7{position:absolute;top:  320px;left:  140px;width:   20px;height:   20px;}
.backh8{position:absolute;top:  320px;left:  160px;width:   20px;height:   20px;}
.backh9{position:absolute;top:  320px;left:  180px;width:   20px;height:   20px;}
.backha{position:absolute;top:  320px;left:  200px;width:   20px;height:   20px;}
.backhb{position:absolute;top:  320px;left:  220px;width:   20px;height:   20px;}
.backhc{position:absolute;top:  320px;left:  240px;width:   20px;height:   20px;}
.backhd{position:absolute;top:  320px;left:  260px;width:   20px;height:   20px;}
.backhe{position:absolute;top:  320px;left:  280px;width:   20px;height:   20px;}
.backhf{position:absolute;top:  320px;left:  300px;width:   40px;height:   20px;}
.backhg{position:absolute;top:  320px;left:  340px;width:   20px;height:   20px;}

.backi1{position:absolute;top:  340px;left:    0px;width:   20px;height:   20px;}
.backi2{position:absolute;top:  340px;left:   20px;width:   40px;height:   20px;}
.backi3{position:absolute;top:  340px;left:   60px;width:   20px;height:   20px;}
.backi4{position:absolute;top:  340px;left:   80px;width:   20px;height:   20px;}
.backi5{position:absolute;top:  340px;left:  100px;width:   20px;height:   20px;}
.backi6{position:absolute;top:  340px;left:  120px;width:   20px;height:   20px;}
.backi7{position:absolute;top:  340px;left:  140px;width:   20px;height:   20px;}
.backi8{position:absolute;top:  340px;left:  160px;width:   20px;height:   20px;}
.backi9{position:absolute;top:  340px;left:  180px;width:   20px;height:   20px;}
.backia{position:absolute;top:  340px;left:  200px;width:   20px;height:   20px;}
.backib{position:absolute;top:  340px;left:  220px;width:   20px;height:   20px;}
.backic{position:absolute;top:  340px;left:  240px;width:   20px;height:   20px;}
.backid{position:absolute;top:  340px;left:  260px;width:   20px;height:   20px;}
.backie{position:absolute;top:  340px;left:  280px;width:   20px;height:   20px;}
.backif{position:absolute;top:  340px;left:  300px;width:   40px;height:   20px;}
.backig{position:absolute;top:  340px;left:  340px;width:   20px;height:   20px;}

.backj1{position:absolute;top:  360px;left:    0px;width:   20px;height:   20px;}
.backj2{position:absolute;top:  360px;left:   20px;width:   40px;height:   20px;}
.backj3{position:absolute;top:  360px;left:   60px;width:   20px;height:   20px;}
.backj4{position:absolute;top:  360px;left:   80px;width:   20px;height:   20px;}
.backj5{position:absolute;top:  360px;left:  100px;width:   20px;height:   20px;}
.backj6{position:absolute;top:  360px;left:  120px;width:   20px;height:   20px;}
.backj7{position:absolute;top:  360px;left:  140px;width:   20px;height:   20px;}
.backj8{position:absolute;top:  360px;left:  160px;width:   20px;height:   20px;}
.backj9{position:absolute;top:  360px;left:  180px;width:   20px;height:   20px;}
.backja{position:absolute;top:  360px;left:  200px;width:   20px;height:   20px;}
.backjb{position:absolute;top:  360px;left:  220px;width:   20px;height:   20px;}
.backjc{position:absolute;top:  360px;left:  240px;width:   20px;height:   20px;}
.backjd{position:absolute;top:  360px;left:  260px;width:   20px;height:   20px;}
.backje{position:absolute;top:  360px;left:  280px;width:   20px;height:   20px;}
.backjf{position:absolute;top:  360px;left:  300px;width:   40px;height:   20px;}
.backjg{position:absolute;top:  360px;left:  340px;width:   20px;height:   20px;}

.backk1{position:absolute;top:  380px;left:    0px;width:   20px;height:   20px;}
.backk2{position:absolute;top:  380px;left:   20px;width:   40px;height:   20px;}
.backk3{position:absolute;top:  380px;left:   60px;width:   20px;height:   20px;}
.backk4{position:absolute;top:  380px;left:   80px;width:   20px;height:   20px;}
.backk5{position:absolute;top:  380px;left:  100px;width:   20px;height:   20px;}
.backk6{position:absolute;top:  380px;left:  120px;width:   20px;height:   20px;}
.backk7{position:absolute;top:  380px;left:  140px;width:   20px;height:   20px;}
.backk8{position:absolute;top:  380px;left:  160px;width:   20px;height:   20px;}
.backk9{position:absolute;top:  380px;left:  180px;width:   20px;height:   20px;}
.backka{position:absolute;top:  380px;left:  200px;width:   20px;height:   20px;}
.backkb{position:absolute;top:  380px;left:  220px;width:   20px;height:   20px;}
.backkc{position:absolute;top:  380px;left:  240px;width:   20px;height:   20px;}
.backkd{position:absolute;top:  380px;left:  260px;width:   20px;height:   20px;}
.backke{position:absolute;top:  380px;left:  280px;width:   20px;height:   20px;}
.backkf{position:absolute;top:  380px;left:  300px;width:   40px;height:   20px;}
.backkg{position:absolute;top:  380px;left:  340px;width:   20px;height:   20px;}

.backl1{position:absolute;top:  400px;left:    0px;width:   20px;height:   20px;}
.backl2{position:absolute;top:  400px;left:   20px;width:   40px;height:   20px;}
.backl3{position:absolute;top:  400px;left:   60px;width:   20px;height:   20px;}
.backl4{position:absolute;top:  400px;left:   80px;width:   20px;height:   20px;}
.backl5{position:absolute;top:  400px;left:  100px;width:   20px;height:   20px;}
.backl6{position:absolute;top:  400px;left:  120px;width:   20px;height:   20px;}
.backl7{position:absolute;top:  400px;left:  140px;width:   20px;height:   20px;}
.backl8{position:absolute;top:  400px;left:  160px;width:   20px;height:   20px;}
.backl9{position:absolute;top:  400px;left:  180px;width:   20px;height:   20px;}
.backla{position:absolute;top:  400px;left:  200px;width:   20px;height:   20px;}
.backlb{position:absolute;top:  400px;left:  220px;width:   20px;height:   20px;}
.backlc{position:absolute;top:  400px;left:  240px;width:   20px;height:   20px;}
.backld{position:absolute;top:  400px;left:  260px;width:   20px;height:   20px;}
.backle{position:absolute;top:  400px;left:  280px;width:   20px;height:   20px;}
.backlf{position:absolute;top:  400px;left:  300px;width:   40px;height:   20px;}
.backlg{position:absolute;top:  400px;left:  340px;width:   20px;height:   20px;}

.backm1{position:absolute;top:  420px;left:    0px;width:  360px;height:   20px;}