.blog_pagination{
    display: block;
    position: relative;
    top: 15px;
    margin-bottom: 50px;
}
img.nav_link {
    max-width: 50px;
}
img.nav_link:hover{
    filter:invert(1);
}
img.nav_link.next-link {
    position: absolute;
    right: 0;
}
img.nav_link.prev-link {
    position: absolute;
    left: 0;
}