I tried adding this code:
/* Stick last widgets in sidebars */
@media(min-width: 769px) {
.inside-right-sidebar,
.inside-left-sidebar {
height: 100%;
}
.inside-right-sidebar .widget:last-child,
.inside-left-sidebar .widget:last-child {
position: -webkit-sticky;
position: sticky;
top: 60px;
}
}
But the last widget of the sidebar didn’t stick.