/* individual margin-top */
.mt0 {
  margin-top: 0;
}
.mt4 {
  margin-top: 4px;
}
.mt8 {
  margin-top: 8px;
}
.mt12 {
  margin-top: 12px;
}
.mt24 {
  margin-top: 24px;
}
.mt36 {
  margin-top: 36px;
}
.mt48 {
  margin-top: 48px;
}
.mt60 {
  margin-top: 60px;
}
.mt72 {
  margin-top: 72px;
}
.mt84 {
  margin-top: 84px;
}
.mt96 {
  margin-top: 96px;
}

/* individual margin-bottom */
.mb0 {
  margin-bottom: 0;
}
.mb4 {
  margin-bottom: 4px;
}
.mb8 {
  margin-bottom: 8px;
}
.mb12 {
  margin-bottom: 12px;
}
.mb24 {
  margin-bottom: 24px;
}
.mb36 {
  margin-bottom: 36px;
}
.mb48 {
  margin-bottom: 48px;
}
.mb60 {
  margin-bottom: 60px;
}
.mb72 {
  margin-bottom: 72px;
}
.mb84 {
  margin-bottom: 84px;
}
.mb96 {
  margin-bottom: 96px;
}

/* combination margin-top & margin-bottom */
.mtb0 {
  margin-top: 0;
  margin-bottom: 0;
}
.mtb4 {
  margin-top: 4px;
  margin-bottom: 4px;
}
.mtb8 {
  margin-top: 8px;
  margin-bottom: 8px;
}
.mtb12 {
  margin-top: 12px;
  margin-bottom: 12px;
}
.mtb24 {
  margin-top: 24px;
  margin-bottom: 24px;
}
.mtb36 {
  margin-top: 36px;
  margin-bottom: 36px;
}
.mtb48 {
  margin-top: 48px;
  margin-bottom: 48px;
}
.mtb60 {
  margin-top: 60px;
  margin-bottom: 60px;
}
.mtb72 {
  margin-top: 72px;
  margin-bottom: 72px;
}
.mtb84 {
  margin-top: 84px;
  margin-bottom: 84px;
}
.mtb96 {
  margin-top: 96px;
  margin-bottom: 96px;
}