.screen-sm-min({
max-width: @sm;
flex-basis:@sm;
text-align: left;
});
.screen-md-min({
max-width: @md;
flex-basis:@md;
});
.screen-lg-min({
max-width: @lg;
flex-basis:@lg;
});
@breakpoint_names: xs, sm, md, lg
.@breakpoint_names
и чтобы в теле менялось.screen-@{breakpoint_name}-min({
max-width: @lg;
flex-basis:@lg;
});