body {
 font-family: Arial, sans-serif;
}

#definition-container {
 margin-top: 20px;
 padding: 20px;
 border: 1px solid #ccc;
 border-radius: 10px;
 box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

#definition-container:empty {
 display: none;
}