.keypad-container {
    display: grid;
    grid-template-columns: repeat(13, 1fr);
    gap: 5px;
    width: 100%;
    max-width: 1040px;
    margin: 20px auto;
}

.keypad-container button {
    font-size: 1.5rem;
    height: 70px;
    width: 70px; 
    background-color: #444;
    color: white;
    border: 1px solid #333;
    border-radius: 5px;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 5px;
}

.keypad-container .button-space {
    width: 390px; 
}
.keypad-container button:hover {
    background-color: #555;
}