css align elements vertically in div code example

Example 1: center elements vertically in div

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

Example 2: css vertical align items in div

.flex-center-vertically {
  display: flex;
  justify-content: center;
  flex-direction: column;
  height: 400px;
}

Example 3: vertical align css

.container{
  display: table;
}

.div-inside-container{
  display: table-cell;
  vertical-align: middle;
}