.m-2 {
  margin: 8px;
}

.mt-2 {
  margin-top: 8px;
}

.mb-2 {
  margin-bottom: 8px;
}

.ml-2 {
  margin-left: 8px;
}

.mr-2 {
  margin-right: 8px;
}


.m-3 {
  margin: 12px;
}

.mt-3 {
  margin-top: 12px;
}

.mb-3 {
  margin-bottom: 12px;
}

.ml-3 {
  margin-left: 12px;
}

.mr-3 {
  margin-right: 12px;
}


.bn-1px {
    position: relative;
    bottom: -1px;
}