body {
    margin: 0;
    overflow: hidden;
    background-color: #000;
    color: white;
    font-family: Arial, sans-serif;
}

.star {
    position: absolute;
    border-radius: 50%;
    background: rgb(255, 246, 221);
    animation: twinkling 1s infinite alternate, moving 20s infinite alternate; /* 修改移动时长 */
}

@keyframes twinkling {
    0% { opacity: 0.5; }
    100% { opacity: 1; }
}

@keyframes moving {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(calc(50vw - 50%), calc(50vh - 50%)); /* 在视口中随机移动 */
    }
}