diff -uNrp a/data/anaconda-gtk.css b/data/anaconda-gtk.css
--- a/data/anaconda-gtk.css	2018-06-08 05:31:59.000000000 +0800
+++ b/data/anaconda-gtk.css	2019-08-12 20:37:52.544000000 +0800
@@ -98,6 +98,7 @@ levelbar.discrete trough block.filled.hi
 .logo {
     background-image: url('/usr/share/anaconda/pixmaps/sidebar-logo.png');
     background-position: 50% 20px;
+    background-size: 90%;
     background-repeat: no-repeat;
     background-color: transparent;
 }