@ shreya
as far as configuration are concerned , it refers to the arrengement of various isomers in the 3d plane of the molecules , and its a common thing o represent the isomers .
CONFORMERS ARE configurational isomers obtained by rotation across carbon – carbon single bond ,
two isomers of this types are
1- staggered isomers
2- eclipsed isomers type
HOPE IT CLEARS
ALL THE BEST ..