.main-container {
    max-width: 1200px;
    margin: 0 auto;
}
.bbs-dev-box {
    max-width: 600px;
    margin: 80px auto;
    text-align: center;
    padding: 40px 30px;
    background: #fff;
    border-radius: 12px;
    border: 1px solid #eee;
}

.bbs-dev-icon i {
    font-size: 60px;
    color: #23c268;
}

.bbs-dev-title {
    margin-top: 20px;
    font-size: 26px;
    color: #333;
    font-weight: 600;
}

.bbs-dev-desc {
    margin-top: 12px;
    font-size: 15px;
    color: #666;
    line-height: 1.7;
}

.bbs-dev-btn {
    margin-top: 30px;
}

.bbs-dev-btn .back-home {
    display: inline-block;
    padding: 10px 22px;
    background: #23c268;
    color: #fff;
    border-radius: 6px;
    text-decoration: none;
    font-size: 15px;
    transition: 0.2s;
}

.bbs-dev-btn .back-home i {
    margin-right: 5px;
    font-size: 16px;
}

.bbs-dev-btn .back-home:hover {
    background: #1dae5c;
}