.faq_box{
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    text-align: left;
    color: #e2e2e2;
    .faq_item{
        border-radius: 5px;
        overflow: hidden;
        margin-bottom: 30px;
        transition: all .5s ease;
        border: 1px solid #636363;
        .faq_q{
            box-sizing: border-box;
            padding: 15px;
            border-radius: 5px;
            background-color: #29293d;
            margin: 0;
            border-bottom: 1px solid #636363;
            transition: all .5s ease;
            cursor: pointer;
            &::before{
                content: " ";
                transition: all .5s ease;
                display: inline-block;
                width: 20px;
                height: 20px;
                margin-right: 5px;
                background-image: url(./zhankai.png);
                background-size: cover;
                transform: rotate(-90deg);
            }
        }
        .active_faq_q{
            &::before{
                transform: rotate(0deg);
            }
        }
        .faq_a{
            padding: 15px 15px;
            margin: 0;
        }
    }
    .active_faq_item{
        background-color: #404040;
    }
}