.container {
    max-width: 800px;
    margin: 0 auto;
    background-color: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.form-group .col-form-label {
    font-weight: bold;
}

.form-group .form-control-lg {
    height: auto;
    padding: 10px;
    font-size: 1.25rem;
}

#click-button {
    font-size: 2em;
    width: 100px;
    height: 100px;
}

.table {
    margin-top: 20px;
}

.btn-lg {
    font-size: 1.25rem;
    padding: 10px 20px;
}