.m-t-5  {margin-top: 5px;}
.m-t-10 {margin-top: 10px;}
.m-t-15 {margin-top: 15px;}
.m-t-20 {margin-top: 20px;}

.m-b-5  {margin-bottom: 5px;}
.m-b-10 {margin-bottom: 10px;}
.m-b-15 {margin-bottom: 15px;}
.m-b-20 {margin-bottom: 20px;}

.m-l-5  {margin-left: 5px;}
.m-l-10 {margin-left: 10px;}
.m-l-15 {margin-left: 15px;}
.m-l-20 {margin-left: 20px;}

.m-r-5  {margin-right: 5px;}
.m-r-10 {margin-right: 10px;}
.m-r-15 {margin-right: 15px;}
.m-r-20 {margin-right: 20px;}