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

body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: #09111d;
}

.container {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
}

.particles {
    position: relative;
    display: flex;
    z-index: 1;
    padding: 0 20px;
}

.particles span {
    position: relative;
    bottom: 30px;
    width: 30px;
    height: 30px;
    background: #4fc3dc;
    box-shadow: 0 0 0 10px #4fc3dc44,
    0 0 50px #4fc3dc,
    -100px 0 #4fc3dc99,
    100px 0 #ff2d7599;
    margin: 0 4px;
    border-radius: 50%;
    animation: animate 15s ease infinite;
    animation-duration: calc(125s / var(--i));
}

.particles span:nth-child(even) {
    background: #ff2d75;
    box-shadow: 0 0 0 10px #ff2d7544,
    0 0 50px #ff2d75,
    100px 0 #4fc3dc99,
    100px 0 #4fc3dc99;
}

@keyframes animate {
    0% {
        transform: translateY(120vh) scale(0) rotate(0deg);
    }
    20% {
        transform: translateY(100vh) scale(1) rotate(0deg);
    }
    100% {
        transform: translateY(-50vh) scale(0.5) rotate(360deg);
    }
}