.anim2-particle {
    $side: 100px;

    background: url('../res/seahorse.svg') no-repeat center center;
    background-size: 20px 20px;
    border-color: salmon;
    border-style: dashed;
    border-radius: 50px;
    border-width: 1px;
    height: $side;
    position: absolute;
    width: $side;
}