Is Casio Fx991ex a Programmable Calculator

.calculator { background-color: #f7f7f7; padding: 20px; max-width: 600px; margin: 0 auto; border-radius: 10px; box-shadow: 0 0 10px rgba(0, 0, 0, 0.1); } .calculator-header h2 { text-align: center; margin-bottom: 10px; } .input-field { width: 100%; padding: 10px; margin: 10px 0; border: 1px solid #ccc; border-radius: 5px; } .actions { display: flex; justify-content: space-between; } .submit-button, .reset-button { background-color: #4CAF50; color: white; padding: 10px 20px; border: none; border-radius: 5px; cursor: pointer; } .submit-button:hover, .reset-button:hover { background-color: #45a049; } .reset-button { background-color: #f44336; }