将div中的几个元素居中

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

.container {
  display: grid;
  justify-content: center;
  align-items: center;
}

.container {
  position: relative;
}

.center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.container {
  position: relative;
}

.center {
  position: absolute;
  top: calc(50% - 10px);
  left: calc(50% - 10px);
}