.main {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
    align-items: stretch;
    margin: 1rem 0;
}
.main .card {
    flex: 1 1 320px;
    max-width: 520px;
    background: #ffffff;
    border: 1px solid #dcdcdc;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.main .card-body {
    padding: 1.8rem;
}

.main .card-title {
    margin-top: 0;
    margin-bottom: 0.8rem;
    font-size: 1.5rem;
}

.main .card-text {
    line-height: 1.7;
    margin-bottom: 1.4rem;
    color: #333333;
}