This video explains a new CSS property that simplifies vertically centering a div element. The speaker, Fabian, discusses the evolution of centering techniques, from older methods requiring complex calculations to the introduction of Flexbox and Grid, culminating in the new align-content property's browser support for standard divs.
position: absolute or Flexbox/Grid, necessitating changes to the element's display property.align-content property, while existing in Flexbox and Grid, now functions on standard block elements (like divs).text-align: center and align-content: center provides a simple solution for horizontal and vertical centering without altering the display property.