body { font-size: 180%; }

.mt-10 { margin-top: 10px; }
.mt-20 { margin-top: 20px; }
.mt-30 { margin-top: 30px; }
.mt-40 { margin-top: 40px; }
.mt-50 { margin-top: 50px; }

.mb-10 { margin-bottom: 10px; }
.mb-20 { margin-bottom: 20px; }
.mb-30 { margin-bottom: 30px; }
.mb-40 { margin-bottom: 40px; }
.mb-50 { margin-bottom: 50px; }

.ml-10 { margin-left: 10px; }
.ml-20 { margin-left: 20px; }
.ml-30 { margin-left: 30px; }
.ml-40 { margin-left: 40px; }
.ml-50 { margin-left: 50px; }

.mr-10 { margin-right: 10px; }
.mr-20 { margin-right: 20px; }
.mr-30 { margin-right: 30px; }
.mr-40 { margin-right: 40px; }
.mr-50 { margin-right: 50px; }