.common_function{
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    justify-content: space-around;
}
.common_function p{
    width: auto !important;
    padding-inline: 5px;
}
.common_function a{
    text-align: center;
    margin: 20px auto;
}
.common_function div{
    width: 33%;
}
.common_function_file {
    width: 891px;
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    justify-content: flex-start;
    align-content: flex-start;
}

.file-item {
    width: 285px;
    box-sizing: border-box;
    text-align: center;
}
.file-item div{
    overflow: hidden;
}

.file-item img.paper_img {
    transition: opacity 0.5s ease;
}
.paper_img {
    transition: opacity 0.5s ease; /* ÉèÖùý¶ÉЧ¹û */
    opacity: 1;
}
.file-item img.em_img{
    transition: transform 0.3s ease; /
}

.file-item img.em_img:hover{
    transform: scale(1.05);
}
.pagination {
    margin-top: 20px;
}

.pagination button {
    margin: 0 5px;
}