Bootstrap helpers: Position (< 100)

[leagrdv]

.fixed-top : < 15 occurences
.fixed-bottom: < 25 occurences
.sticky-top: ~ 50 occurences (0 for the responsive ones)
.sticky-bottom: < 10 occurences (0 for the responsive ones)
https://getbootstrap.com/docs/5.3/helpers/position/