Sizmek MDX: Manage > Ads > New > Design New HTML5 Ad > [Ad_Name] > Properties Panel
Sizmek Ad Suite (SAS): Creative > Ads > New Ad > [Ad_Name] > Properties Panel
Ad Builder enables you to add a one-pixel solid border to your panel and banners. A border helps you attract attention to your ad on the page. Research has shown that adding a border increases the ad's CTR. It is recommended to select a dark blue border or choose a contrasting color to make the ad stand out on the ad.
Note: You cannot add a border to In-Stream and Single Expandable ads.