.page{
    padding: 0;
    margin: 0;
}
.banner{
    text-align: center;
    width: 100%;
    margin: 0 auto;
    height: 500px;
    object-fit: cover;
}
.page_banner{
    padding: 0;
    position: relative;
}
.banner_zeza{
    width: 100%;
    height: 100%;
    position: absolute;
    background-color: rgba(0, 0, 0, 0.5);
}
.nav_about{
    padding-left: 15px;
    border-bottom: 1px solid #ccc;
    padding-bottom: 10px;
}
.nav_about a{
    text-decoration: none;
    color: rgb(171, 167, 167);
}

.page_about{
    padding: 40px 0;
    width: 1920px;
    margin: 0 auto;;
}
.page_give{
    width: 1920px;
    margin: 0 auto;
    padding: 0;
}
.page_give_dh{
    display: flex;
    justify-content: center;
}
.page_give_dh_item{
    padding: 10px 20px;
    margin: 5px;
    border: 1px solid #36f2cd;
    text-align: center;
    cursor: pointer 

}
.page_give_dh_item:hover{
    color: #fff;
    background-color: rgba(41, 198, 124, 1);  
    transition: all 0.5s ease-in-out 0s;
}
._active{
    color: #fff;
    padding: 10px 20px;
    margin: 5px;
    background-color: rgba(41, 198, 124, 1) ;  
}
.tab-content{
    border-bottom: none;
    position: relative;
}
.page_give_contes{
    /* display: flex;
    justify-content: center; */
    transform-style: preserve-3d;
    opacity: 1;
}
.page_give_contes .active{
    overflow: hidden;
}
.page_give_contes_item{
    padding: 0;
    margin: 0 auto;
    text-align: center;
    margin-bottom: 10px;
    opacity: 0;
}
.slide-in-from-left{  
    opacity: 1;
    animation: slideInFromLeft 0.5s ease-in-out forwards;  
}
.img-fluid{
    width: 100%;
    height: 400px;
    object-fit: cover; 
}
.tab_active >div{
    opacity: 1;
}

@keyframes slideInFromLeft {  
    from {  
        transform: translateX(-100%);
        opacity: 0;
        transform-origin: 50% 50%;
        transform: scale(0) rotate(-50deg);
        transition-property: opacity, transform;
        transition-duration: 0.5s, 250ms;  /* 设置动画持续时间 */  
        transition-timing-function: cubic-bezier(0.25,0.1,0.25,1), cubic-bezier(0.25,0.1,0.25,1),; 
    }  
    to {  
        transform: translateX(0);
        opacity: 1;
        transform-origin: 0px 0px;
        transform: scale(1) rotate(0deg);
    }  
}  
li{
    list-style: none;
}
li>img {
    cursor: zoom-in;
   
}