.tac-cover {
    display: flex;
    justify-content: center;
    align-items: center;
    background-size: cover;
    background-position: center;
    height: 50vh;
    width: 100%;
}


.cover-item {
    text-align: center; /* 内容水平居中 */
}

.cover-caption {
    color: white; /* 文本颜色 */
}

.tac-carousel .carousel-inner {
    height: 100vh;  /* 使 carousel 高度填满视口 */
}

.tac-carousel .carousel-item img {
    object-fit: cover;  /* 确保图片填充整个容器 */
    height:100vh !important;       /* 图片高度填充 */
    width: 100%;
}


/* 轮播图调整 */
.tac-carousel .carousel-indicators button {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}