skyscrapper ad & Leaderboard ad

Specificaions as below

Mega Skyscraper Specifications
Dimensions: 300x600px
Format: HTML5 or Animated/Static GIF
File size: 100kb (Html5) or 80kb (GIF, JPG, PNG)
Back-up image: 40kb (JPG or PNG). Back-up image only required if you supply an HTML5 banner.
Looping: Yes
See Half Page for more information

Leaderboard Specifications
Dimensions: 728×90px
Format: HTML5 or Animated/Static Gif
Max file size: 100kb (HTML5), 80kb (GIF, JPG, PNG)
Back-up image: 40kb (GIF, JPG, PNG). Back-up image only required if you supply an HTML5 banner.
Looping: Yes
See Leaderboard for more information.

Example:
https://www.realestate.com.au/buy/in-quakers+hill,+nsw+2763/list-1