a.logo::before  {
    content: '';
    background-image: url(/psnc_images/logo.svg);
    display: inline-block;
    width: 150px;
    height: 25px;
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
}

a svg#logo-svg  {
    display: none;
}

div.logo-svg::before  {
    content: '';
    background-image: url(/psnc_images/logo.svg);
    display: inline-block;
    width: 400px;
    height: 100px;
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
}

div.logo-svg svg {
    display: none;
}