*,html,body{
    padding: 0;
    margin: 0;
}
html{
    font-size: 16px;
}
.kaishi{
    font-size: 2rem;
}
.content{
    position: absolute;
    z-index: 1;
    font-size: 2rem;
    width: 100%;
    height: 100%;
}
.content .flex{
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    width: 100%;
    height: 100%;

}
.flex{
    color: #f4abbf;
    /* background-color: pink; */
}
.flex .images{
    width: 300px;
    height: 300px;
    overflow: hidden;
    margin-top: 30px;
}
.content {
    opacity: 0;
    /* 初始隐藏 */
    animation: fadeIn 1s ease-in-out 2s forwards;
    /* 2秒后执行动画，1秒内淡入 */
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.dh {
    opacity: 1;
    /* 初始显示 */
    transition: opacity 0.8s ease-in-out;
    /* 0.8秒渐变 */
}

.hidden {
    opacity: 0;
    display: none;
}