.sentence-box, .advice-box {
    max-width: 600px;
    margin: 1em auto;
    padding: 1em;
    font-size: 1.5em;
    background: #ffffffee;
    border-radius: 12px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    line-height: 1.6;
}

.btn-row {
    text-align: center;
    margin-top: 1.5em;
}

.btn-row button {
    background-color: #4a90e2;
    color: white;
    border: none;
    margin: 0 0.5em;
    padding: 0.6em 1.4em;
    font-size: 1em;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.3s ease;
}

.btn-row button:hover {
    background-color: #357abd;
}