.f_ac {
  display: flex;
  align-items: center;
}

.f_jc {
  display: flex;
  justify-content: center;
}

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

.f_ac_jsb {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.f_ac_jsa {
  display: flex;
  align-items: center;
  justify-content: space-around;
}

.fd {
  display: flex;
  flex-direction: column;
}

.fd_ac {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.fd_ac_jsb {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
}

.fd_jc {
  display: flex;
  flex-direction: column;
  justify-content: center;
}