.mb20 {
  margin-bottom: 20px;
}
.mt20 {
  margin-top: 20px;
}
.ml20 {
  margin-left: 20px;
}
.mr20 {
  margin-right: 20px;
}
.mt10 {
  margin-top: 10px;
}
.mb10 {
  margin-bottom: 10px;
}
.mr10 {
  margin-right: 10px;
}
.ml10 {
  margin-left: 10px;
}

