@charset "utf-8";

.page_topic .main {
    margin: 50px 0;
}

/*
topic_list
*/
.topic_list {
    max-width: 1000px;
    margin: 0 auto;
}

.topic_list .item {
    width: 100%;
    margin: 20px 0;
}

.topic_list .pic {
    position: relative;
    overflow: hidden;

    width: 100%;
    padding-bottom: 40%;

    border-radius: 5px;
    border: 1px solid #000;
}

.topic_list .pic_box {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.topic_list .pic img {
    width: 100%;
    height: 100%;
    display: block;
    overflow: hidden;
    transition: transform .3s ease-in-out;
}

.topic_list .dt {
    width: 100%;
    padding: 10px;
    font-size: 16px;
    font-weight: 600;
    text-align: center;
    position: absolute;
    bottom: 0;
    left: 0;
    background-color: rgba(0, 0, 0, 0.4);
    color: #fff;
}