How to set Default CSS Settings for HTML <img> Tag

See the Example

index.html

Example: HTML

<style>
img {
  display: inline-block;
}
</style>
<p>Some text <img src="https://horje.com/avatar.png" alt="Smiley face" width="42" height="42"> some text.</p>

Output should be:

Type:	html
Category:	Web Tutorial
Sub Category:	HTML Tag
Uploaded by:	Admin