* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background: #000;
    display: flex;
    justify-content: center; /* Center horizontally */
    align-items: center; /* Center vertically */
    height: 100vh; /* Make body take up full viewport height */
}

.ul {
    display: flex;
}

li {
    list-style-type: none;
    width: 30px;
    height: 30px;
    background-color: #fff;
    border-radius: 50%;
    animation: move 1.6s ease-in-out infinite;
}

@keyframes move {
    0%, 40%, 100% {
        transform: scale(0.2);
    }
    20% {
        transform: scale(1);
    }
}

li:nth-child(1) {
    animation-delay: -1.4s;
    background-color: #ffff00;
    box-shadow: 0 0 50px #ffff00;
}

li:nth-child(2) {
    animation-delay: -1.2s;
    background-color: #76ff03;
    box-shadow: 0 0 50px #76ff03;
}

li:nth-child(3) {
    animation-delay: -1s;
    background-color: #f06292;
    box-shadow: 0 0 50px #f06292;
}

li:nth-child(4) {
    animation-delay: -0.8s;
    background-color: #4fc3f7;
    box-shadow: 0 0 50px #4fc3f7;
}

li:nth-child(5) {
    animation-delay: -0.6s;
    background-color: #ba68c8;
    box-shadow: 0 0 50px #ba68c8;
}

li:nth-child(6) {
    animation-delay: -0.4s;
    background-color: #f57c00;
    box-shadow: 0 0 50px #f57c00;
}

li:nth-child(7) {
    animation-delay: -0.4s;
    background-color: #673ab7;
    box-shadow: 0 0 50px #673ab7;
}