.iu-post-nav-row .iu-post-nav .btn{color:#fff;background-color:#3ca194!important;border-color:#3ca194!important;filter:grayscale(0%);transition:all 200ms linear}.iu-post-nav-row .iu-post-nav .btn:hover{filter:grayscale(40%)}.iu-post-nav-row{justify-content:space-between}