#exercise{    
  max-width: 680px;
}

/*#exercise{    
  padding:0px;  
  padding-top:20px;  
  clear:both;
  overflow: hidden;  
  max-width: 680px; 
  margin: 0px auto;
  min-height:650px;
  text-align: center;  
  background-color: transparent;
  padding-bottom: 50px;

}
*/
#exercise h1,h2,h3{    
  margin:10px;
}

#itemParent{  
  margin-top: 0px;
  min-height: 300px;      
}

#exercise #item h1{
  font-size: 36px;
  line-height: 36px; 
}

#exercise #item h2{  
  margin-top: 0px;
  padding-top: 0px;
  font-size: 20px;
  line-height: 28px;  
}

#calculator{  
  font-family: 'Open Sans', monospace;  
  text-align: right;
  display: inline-block; 
  vertical-align: top;  
  margin-top: 0px;  
  border-radius: 6px;  
  box-shadow: 0px 0px 32px 0px rgba(0,0,0,0.0);
  background-color: white;
  padding:20px;
}

#exercise #keyboard table{
  margin-top:10px;  
}

#keyboard td{
  width:70px;
  height: 60px;  
  border:0px;
}

.calculatorButton{
  text-align: center;
  width: 100%;
  height: 100%;
  font-size: 28px;
  display: inline-block;    
  margin: 2px;
  line-height: 60px;       
  font-weight: 300;
    
  cursor: pointer;
  color:white; 
  border-radius: 5px;    
}

.calculatorButton.blue{
  background-color: #3498db;
}
.calculatorButton.blue:hover{
  background-color: #2980b9;
}

.calculatorButton.orange{
  background-color: #e67e22;
}
.calculatorButton.orange:hover{
  background-color: #d35400;
}

.calculatorButton.purple{
  background-color: #9b59b6;
}
.calculatorButton.purple:hover{
  background-color: #8e44ad;
}

#memory{
  vertical-align: top;
  display: inline-block;
  font-size: 14px;
  color:red;
}
#display{  
  display: inline-block;
  width: 95%;
  font-weight: 300;
  font-size: 28px;  
  line-height: 50px;
  height: 50px;
  text-align: right;
  
  color:#717378;    
  padding:0px 10px;    
  border:1px solid #bdc3c7;  
  background-color: white;
}

#display.correct{ 
  border:2px solid #2ecc71;
  box-shadow: 7px 7px 7px 0px rgba(0,0,0,0.0);
}

#display.wrong{ 
  border:2px solid #e74c3c;
  box-shadow: 7px 7px 7px 0px rgba(0,0,0,0.0);
}

#answers{
  display: block;
  margin-bottom: 0px;
}

.answer{
  min-width:70px;
  height: 50px;
  line-height: 50px;
  padding:0px 10px;

  display:inline-block;
  margin-left: 10px;
  margin-top: 0px;

  background-color: white;   
  border-radius: 6px;
  color:#717378;
  font-size: 36px;
  font-weight: 300;  

  box-shadow: 0px 0px 32px 0px rgba(0,0,0,0.0);
  border:2px solid transparent;
}

.answer.correct{
  border:2px solid #35cc73;  
  color:#ecf0f1;
}

.katex {   
  font-size: 1.0em !important; 
}

#exercise .tlacitko{
  margin: 5px;
}

#exercise .tlacitko-control{
  display: inline-block;
  margin: 5px;  
  margin-top: 20px;
  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; 
}

#exercise .tlacitko-control.disabled{ 
  color:white;
  background-color:#e6e8ea;  
}

#exercise #tile{  
  display: none;
}

#exercise .statsTile{  
  border: 1px solid #D2D3D5;
  border-radius:3px;  
  display:inline-block;    
  width:70px;
  color:gray;
  font-size: 14px;  
  background-color: white;
  padding: 15px 5px 5px 5px;  
}

#exercise .stats{    
  margin-bottom: 10px;  
  font-size: 24px;  
  color: #828384; 
  display: block;
}

/* PRAVIDLA */
#exercise #rules{  
  display: inline-block;
  background-color: white;  
  padding:15px;
  margin-bottom: 15px;
  border-radius: 6px;
  box-shadow: 0px 0px 32px 0px rgba(0,0,0,0.0);
}