#myImage {
    z-index: 20;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: .2s ease-in-out;
}

.messages {
    z-index: 30;
    position: relative;
    font-family: Verdana;
    left: 50px;
    top: 200px;
    opacity: 0;
    transition: opacity 1s ease;
    width: 200px;
    transform: rotate(20deg);
    -webkit-user-select: none;
    user-select: none;
    -webkit-text-stroke: 1px rgb(255, 44, 234);
}

.img-box img {
    position: absolute;
    transition: opacity 1s ease-in-out;
    /* 过渡效果 */
}