Quick copy-paste access (if you know, you know):
<spine page-progression-direction="rtl">
.calibre1 {
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
Quick copy-paste access (if you know, you know):
<spine page-progression-direction="rtl">
.calibre1 {
display: flex;
justify-content: center;
align-items: center;
height: 100vh;