/*************************** ANTRE ***************************/
#exercise{  
  max-width: 800px;
}

/*#exercise{    
  padding:0px;  
  padding-top:20px;  
  clear:both;
  overflow: hidden;  
  max-width: 700px; 
  margin: 0px auto;
  min-height:650px;
  text-align: center;  
  background-color: transparent;
  border:0px;
}*/

#questionParent{  
  margin-top: 20px;
  min-height: 300px;    
  display: none; 
}

.katex {   
  /*font-size: 2.8em !important; */
}

#exercise .tlacitko-control{
  display: inline-block;
  margin: 5px;  
  margin-top: 0px;
  font-size: 18px;    
  width: 150px;      
  text-align:center;  
  border-radius:2px;  
  line-height: 50px;  
  cursor: pointer;

  background-color: #e0e0e2;
  color: var(--darkGray);
}

#exercise .tlacitko-control:hover{ 
  color:white; 
  background-color:#2ecc71; 
}

#board{
  display:inline-block; 
  background-color:white; 
  width:500px; 
  height:500px; 
  border-radius:3px;
  box-shadow: 0px 0px 32px 0px rgba(0,0,0,0.1); 
  border:3px solid transparent;
}

#exercise .formula{
  display:none; 
  width:400px; 
  font-size:24px; 
  line-height:1.7em;
  margin-bottom:5px;
}

#board.correct,.formula.correct{
  border:3px solid #34cb73;
}
#board.wrong,.formula.wrong{
  border:3px solid #e55043; 
}