.center-vertical {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    justify-content: start;
    align-items: center;
    width: 100vw;
    height: 100vh;
    z-index: 99!important;
}

#canvas {
    width: 725px;
    margin: 0;
    z-index: 100;
}

@media (max-width: 600px) {
    #canvas {
        width: 320px;
    }
    .center-vertical {
        justify-content: center;
        height: 100vh;
    }
    .outside-box-right-15 div{
        display: flex;
        flex-direction: row;
        height: 100vh;
        align-items: center;
    }
}

.slider-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.35);
    z-index: 1;
    pointer-events: none;
}

#bg-particles {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
    background: transparent;
}