a{
text-decoration: none;
}
.nav-item:hover a{
        color: red;
        font-weight: bold;

        }
        .nav-item a{
        color: #fff;
        }
        .topimg{
        height: 215px;
        object-fit: cover;
         object-position: top;
        }
        .list-group-title{
        color: #fff;
        border-top-left-radius: inherit;
        border-top-right-radius: inherit;
        padding: 0.4rem;
        }
        .text-justify {
  text-align: justify;
  text-justify: inter-ideograph; /* 中文优化：汉字间可伸缩 */
}
.listimg{
        height: 200px;
        object-fit: cover;
         object-position: top;
        }