#exercise{      
  clear:both;
  max-width: 900px; 
  margin: 0px auto;       
  min-height:600px;
  text-align: center;        
  background-color: transparent;
  border:0px;
}

#exercise h2{  
  margin:0px;
}
#exercise h3{  
  margin:0px;
  margin-top:20px;
  font-size: 22px;  
}

#exercise p{  
  margin:0px;
}

#exercise #editorCode{
  display: inline-block;  
  text-align: left;    
}

#exercise .CodeMirror{
  border-top: 0px solid black; 
  border-bottom: 0px solid black;
  text-align: left;
  font-size: 18px;
  line-height: 1.3em;
  height: 400px;
  width: 400px;
  display: inline-block;  
  border: 1px solid #e8eced;
}

#exercise #platno-obal {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
  align-items: flex-end;
}

#exercise #platno{
  position: relative;
  height:400px; 
  width:400px; 
  border:1px solid #f0c52f;
  background-color:white;
  z-index: 0;
}

#exercise #platno #display, #exercise #platno #display2 {
  position: absolute;
  top: 0;
  left: 0
}

#exercise #platno #display {
  z-index: 1;
}

#exercise #platno[solution="under"] #display2 {
  background-color: transparent;
  opacity: 0.2;
  z-index: 0;
}

#exercise #platno[solution="over"] #display2 {
  z-index: 2;
}

#exercise #platno[solution="hidden"] #display2 {
  display: none;
}

#exercise #platno.correct{
  border:3px solid #00d872;
}

#exercise #output{
  margin-top:10px;
}

.message .title {
  font-weight: 500;
}
.message .detail {
  font-size: .9em;
}

#exercise #rules{  
  display: inline-block;
  max-width: 600px;
  background-color: white;
  border:1px solid #2980b9;
  border-radius: 3px;
  padding:15px;  
  margin-bottom: 15px;
}

#exercise .rule{  
  display: none;  
  background-color: white;
  border:1px solid #2980b9;
  border-radius: 3px;
  padding:15px;  
  margin-bottom: 15px;
  text-align: left;
}

#exercise #explanation{
  font-size: 18px;
  font-weight: 400;
  background-color: white;
  border:1px solid #2980b9;
  border-radius: 3px;
  padding:10px;
  text-align: left;
  display: none;
}

#backOverview{
  text-decoration:none;
}
.some-class{
  background-color: #ffeff0;
}

#exercise #instructions{  
  font-weight: 400;
  background-color: white;  
  border-radius: 3px;
  text-align: left;
  margin: 10px 0px;
}

#exercise #instructions-content {
  margin: 15px;
}

.CodeMirror .current {
  background-color: #f8efbc;
}

#exercise .CodeMirror.error {
  border: 2px solid #e74c3c;
}

.CodeMirror .errorLine {
  background-color: #f7bcbc;
}

.tlacitko.disabled {
  pointer-events: none;
}