.reference-page .reference-category {
    background-color: rgb(245, 245, 245);
    padding: 10px;
    margin-bottom: 10px;
}
.reference-page .reference-category .category-menu{
    list-style: none;
    font-size: 16px;
    font-weight: bold;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;

}
.reference-page .reference-category .category-menu li a{
    color: #000000;
    text-decoration: none;
    padding: 5px 10px;
    position: relative;
}
.reference-page .reference-category .category-menu > li.active > a{
    pointer-events: none;
}
.reference-page .reference-category .category-menu > li.active > a,
.reference-page .reference-category .category-menu > li:hover > a{
    color: #A2D10B;
}
.reference-page .reference-category .category-menu > li > a:after {
    background: none repeat scroll 0 0 transparent;
    bottom: 0;
    content: "";
    display: block;
    height: 1px;
    left: 50%;
    position: absolute;
    background: #000000;
    transition: width 0.3s ease 0s, left 0.3s ease 0s;
    width: 0;
}
.reference-page .reference-category .category-menu > li.active > a:after,
.reference-page .reference-category .category-menu > li:hover > a:after {
    width: 100%;
    left: 0;
}
.reference-page .reference-category .category-menu > li > a:after,
.reference-page .reference-category .category-menu > li > a:before {
    transition: all .3s ease;
}

.reference-page .reference-box {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}
.reference-page .reference-item {
    background-color: #FFFFFF;
    padding: 5px;
    margin: 3px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 150px;
}
.reference-page .container {
    position: relative;
}
.reference-title {
    font-size: 10px;
    padding: 5px 0px;
    margin: 0 10px;
    border-radius: 2px;
    color: #000000;
}
.reference-content {
    position: relative;
    overflow: hidden;
}
.reference-img {
    width: 100%;
    height: 150px;
    transition: all .2s linear;
}
.reference-item:hover .reference-img {
    transform: scale(1.1);
}
.reference-footer {
    position: absolute;
    bottom: 0px;
    left: 0px;
    right: 0px;
    background-color: rgba(255, 255, 255, 0.5);
    opacity: 0;
    transition: all .3s linear;
}
.reference-item:hover .reference-footer {
    transition-delay: .2s;
    opacity: 1;
}
.download a {
    text-decoration: none;
    padding: 5px 10px;
    background-color: #00469C;
    color: #FFFFFF;
    border-radius: 5px;
    box-shadow: 1px 1px 3px -1px rgb(0, 0, 0 , 0.8);
}