.flex {
  display: flex;
}

.flex1 {
  flex: 1;
}

.flex-row {
  display: flex;
  flex-direction: row;
}

.flex-col {
  flex-direction: column;
}

.flex-h-l {
  display: flex;
  justify-content: flex-start;
}

.flex-h-r {
  display: flex;
  justify-content: flex-end;
}

.flex-h-c {
  display: flex;
  justify-content: center;
}
.flex-h-bt {
  display: flex;
  justify-content: space-between;
}

.flex-v-t {
  display: flex;
  align-items: flex-start;
}

.flex-v-b {
  display: flex;
  align-items: flex-end;
}

.flex-v-c {
  display: flex;
  align-items: center;
}

.flex-cc {
  display: flex;
  justify-content: center;
  align-items: center;
}