Particle Burst

<div class="particle-burst">
    <div class="particle"></div>
    <div class="particle"></div>
    <div class="particle"></div>
    <div class="particle"></div>
    <div class="particle"></div>
    <div class="particle"></div>
    <div class="particle"></div>
    <div class="particle"></div>
</div>

.particle-burst {
    position: relative;
    width: 200px;
    height: 200px;
}

.particle {
    position: absolute;
    width: 10px;
    height: 10px;
    background: #ff6b6b;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    animation: burst 2s ease-out infinite;
}

.particle:nth-child(1) { animation-delay: 0s; }
.particle:nth-child(2) { animation-delay: 0.1s; }
.particle:nth-child(3) { animation-delay: 0.2s; }
.particle:nth-child(4) { animation-delay: 0.3s; }
.particle:nth-child(5) { animation-delay: 0.4s; }
.particle:nth-child(6) { animation-delay: 0.5s; }
.particle:nth-child(7) { animation-delay: 0.6s; }
.particle:nth-child(8) { animation-delay: 0.7s; }

@keyframes burst {
    0% {
        transform: translate(-50%, -50%) scale(0);
        opacity: 1;
    }
    100% {
        transform: translate(
            calc(-50% + var(--x, 100px)),
            calc(-50% + var(--y, 100px))
        ) scale(1);
        opacity: 0;
    }
}

.particle:nth-child(1) { --x: 80px; --y: 0px; }
.particle:nth-child(2) { --x: 56px; --y: 56px; }
.particle:nth-child(3) { --x: 0px; --y: 80px; }
.particle:nth-child(4) { --x: -56px; --y: 56px; }
.particle:nth-child(5) { --x: -80px; --y: 0px; }
.particle:nth-child(6) { --x: -56px; --y: -56px; }
.particle:nth-child(7) { --x: 0px; --y: -80px; }
.particle:nth-child(8) { --x: 56px; --y: -56px; }