canvas
{
    display: block;
    vertical-align: bottom;
}

#box_particles
{
    height: 80vh;
    background: #162633;
}

@import url(http://fonts.googleapis.com/css?family=Roboto:100);

.boxposition
{
    position: absolute;
    z-index: 5;
    top: 10vh;
    right: 0;
    left: 0;
    margin: 0  auto;
}