.jspsych-content {
  max-width: 100%;
}

body {
  overflow: hidden;
}

.jspsych-content #jspsych-image-keyboard-response-stimulus {
  max-width: 95vw !important;    
  max-height: 85vh !important;   
  width: auto !important;        
  height: auto !important;      
  object-fit: contain !important; 
  margin: 0;
  padding: 0;
  cursor: crosshair;
}

.center-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.screen-info {
  position: fixed;
  bottom: 10px;
  right: 10px;
  font-size: 12px;
  color: #666;
  background: rgba(255,255,255,0.8);
  padding: 5px 10px;
  border-radius: 4px;
}