.gray_board {
    background: #F6F6F6;
    overflow: hidden;
}

.cover_bg {
    min-height: calc(100vh - 1.2rem);
}

.title {
    font-size: 0.2rem;
}

.filter {
    display: flex;
}

.filter_column {
    display: table;
    flex-wrap: wrap;
}

.filter_row {
    display: table-row;
}

.filter_label {
    font-weight: 700;
    font-size: 0.15rem;
    display: table-cell;
    padding: 20px 20px 0 20px;
    height: 0;
}

.filter_input {
    display: table-cell;
}

.search, .archive {
    background: #FFFFFF;
    margin: 0 20px;
    width: 2.5rem;
    height: 0.4rem;
    font-size: 0.15rem;
    display: flex;
}

.search_box:focus-within,
.archive_select:focus-within {
    outline-offset: 0px;
    border: 2px solid #000;
    margin: -2px;
}

.archive_select {
    padding-left: 20px;
    width: 100%;
}

.archive:after {
    content: '\f0d7';
    font-family: "fontawesome";
    font-size: 0.2rem;
    font-weight: 900;
    pointer-events: none;
    width: 0;
    position: absolute;
    padding-left: 2.2rem;
}

.archive:hover:after {
    color: #78b0a7;
}


.search_box {
    display: flex;
    width: 100%;
}

.search_edit {
    padding-left: 10px;
    width: 85%;
    height: 100%;
}

.search_edit:hover {
    box-shadow: initial !important;
}

.search_submit {
    width: 15%;
    height: 100%;
}

.search_submit:hover {
    color: #78b0a7;
}

.article_list {
    padding: 0.2rem;
    display: flex;
    flex-wrap: wrap;
}

.article {
    margin: 0.2rem;
    width: calc((100% - 1.2rem) / 3);
    height: 2.5rem;
    background-color: #fff;
    box-shadow: 0 0 8px rgba(0, 0, 0, .16);
    text-decoration: none;
    position: relative;
    transition: all .5s;
}

@media screen and (max-width: 1040px){
    .article {
        width: calc((100% - 0.8rem) / 2);
    }
}

@media screen and (max-width:460px) {
    .article {
        width: calc(100% - 0.4rem);
    }
}

.article:hover {
    transform: translateY(-5px);
}

.article .article_link {
    position: absolute;
    width: 100%;
    height: 100%;
}

.article_content {
    width: 100%;
    height: 100%;
}

.article .article_title {
    display: -webkit-box;
    margin: 0.2rem;
    font-size: 0.2rem;
    font-weight: bold;
    text-decoration: none;
    overflow: hidden;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.article .tags {
    display: flex;
    flex-wrap: wrap;
    padding: 0.1rem 0.2rem;
    font-size: 0.15rem;
}

.article .tags .fa-tag {
    padding: 8px;
}

.article .tags .tag {
    padding: 0 2px;
    margin: 2px 5px;
    font-weight: 500;
    text-decoration: underline dotted;
    z-index: 1;
    transition: all .5s;
}

.tag:hover {
    text-decoration: none;
    opacity: 0.6;
}

.article .article_info {
    font-weight: 600;
    font-size: 0.15rem;
}

.article_date {
    color: #AAA;
    pointer-events: none;
}

.article .article_info .article_date {
    padding: 20px;
    position:absolute;
    left: 0;
    bottom: 0;
}

.article .article_info .author {
    padding: 20px;
    position:absolute;
    right: 0;
    bottom: 0;
    vertical-align: middle;
    height: 0.3rem;
    display: inline-flex;
}

.article .article_info .author .author_img {
    height: 100%;
    width: auto;
    border-radius: 50%;
    margin-right: 0.1rem;
}

.author:hover {
    opacity: 0.6;
}