.resistance-types{width:199px; height:232px ;}
.rheostat1{width:180px; height:99px ;}
.rheostat2{width:201px; height:129px ;}
.rheostat3{width:179px; height:132px ;}
.Potentiometer1{width:150px; height:130px ;}
.Potentiometer2{width:150px; height:130px ;}
.resistance-types2{width:161px; height:101px ;}
.resistance-types3{width:90px; height:144px ;}