.pkp_site_name {
    width: 100%;
}

.pkp_site_name_wrapper {
    width: 100%;
    padding: 0;
}

.pkp_site_name .is_img {
    width: 100%;
}

.pkp_site_name .is_img img {
    display: block;
    width: 100%;
    max-width: none;
    height: auto;
}