.effect {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;

    width: 100%;
    height: 100%;
}

.particle.size10 {
    width: 10px;
    height: 10px;
}

.particle.size15 {
    width: 15px;
    height: 15px;
}

.particle.size20 {
    width: 20px;
    height: 20px;
}

.particle.color1 {
    background-color: rgb(0, 102, 255);
    box-shadow: 0 0 20px rgb(0, 102, 255);
}

.particle.color2 {
    background-color: rgb(0, 60, 255);
    box-shadow: 0 0 20px rgb(0, 78, 209);
}

.particle.color3 {
    background-color: rgb(0, 157, 255);
    box-shadow: 0 0 20px rgb(0, 146, 209);
}

.particle {
    position: absolute;
    z-index: 0;
    border-radius: 50%;
    animation-name: size_particle;
    animation-duration: 10s;
    animation-timing-function: linear;
    animation-iteration-count: 1;
    animation-fill-mode: forwards;
}

@keyframes size_particle {
    0% {
        transform: translateX(0) scale(0.3);
        opacity: 0;
    }

    50% {
        transform: translateX(-75px) scale(1);
        opacity: 1;
    }

    100% {
        transform: translateX(-150px) scale(0);
        opacity: 0;
    }
}