How can we center an element in its container?

You can set the margin property to auto to horizontally center the element within its container.

The element will then take up the specified width, and the remaining space will be split equally between the left and right margins.

div {
  width: 300px;
  margin: auto;
  border: 1px solid red;
}

Source: https://www.w3schools.com/css/css_margin.asp