.coin-uc-challenge.coin-elem { 
  width: 20%;
  height: 20%;  
} 
 
.coin-uc-challenge:nth-child(1) {
   background-image: url('../dataimg/uy_10pesos_rev.jpeg');  
}
 
.coin-uc-challenge:nth-child(2) {
   background-image: url('../dataimg/uy_10pesos_rev.jpeg');  
}
 
.coin-uc-challenge:nth-child(3) {
   background-image: url('../dataimg/uy_10pesos_rev.jpeg');  
}
 
.coin-uc-challenge:nth-child(4) {
   background-image: url('../dataimg/uy_10pesos_rev.jpeg');  
}
 
.coin-uc-challenge:nth-child(5) {
   background-image: url('../dataimg/uy_10pesos_rev.jpeg');  
}
 
.coin-uc-challenge:nth-child(6) {
   background-image: url('../dataimg/uy_10pesos_rev.jpeg');  
}
 
.coin-uc-challenge:nth-child(7) {
   background-image: url('../dataimg/uy_10pesos_rev.jpeg');  
}
 
.coin-uc-challenge_1 {
  top: 30.0%;
  left: 30.0%;
}
 
.coin-uc-challenge_2 {
  top: 50.0%;
  left: 30.0%;
}
 
.coin-uc-challenge_3 {
  top: 70.0%;
  left: 30.0%;
}
 
.coin-uc-challenge_4 {
  top: 70.0%;
  left: 50.0%;
}
 
.coin-uc-challenge_5 {
  top: 70.0%;
  left: 70.0%;
}
 
.coin-uc-challenge_6 {
  top: 50.0%;
  left: 70.0%;
}
 
.coin-uc-challenge_7 {
  top: 30.0%;
  left: 70.0%;
}
   
.goal-coin_1{
   top: 30.0%;
   left: 30.0%;
} 
   
.goal-coin_2{
   top: 50.0%;
   left: 30.0%;
} 
   
.goal-coin_3{
   top: 70.0%;
   left: 30.0%;
} 
   
.goal-coin_4{
   top: 70.0%;
   left: 50.0%;
} 
   
.goal-coin_5{
   top: 70.0%;
   left: 70.0%;
} 
   
.goal-coin_6{
   top: 30.0%;
   left: 50.0%;
} 
   
.goal-coin_7{
   top: 30.0%;
   left: 70.0%;
}