.block-introblock {
    padding: 50px 0;
}

.block-introblock .field--name-field-subtit-paragraph {
    font-weight: bold;
    color: #333;
    margin-bottom: 10px;
    font-size: 1rem;
}

.block-introblock .field--name-field-tit-paragraph {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.block-introblock .field--name-field-txt-paragraph p {
    font-size: 1rem;
    line-height: 1.6;
    color: #555;
    margin-bottom: 15px;
}