Image is decorative

Rule ID	Image 5
Conformance	Required
Definition	Images with `[alt=""]` or `[role="none"]` must only be used to identify purely decorative images, spacing or stylistic purposes.
Purpose	If an image is used purely for stylistic or decorative purposes, users of screen readers do not need to know that the image exists and no alternative is needed. If an image contains information, but is mistakenly identified as decorative, users of assistive technologies will not have access to the information.
Conformance	Required
WCAG Success Criteria	Success Criterion 1.1.1 Non-text Content Other Related Success Criterion:
Rule Category	Images
Rule Scope	Element
First Step	no
Techniques	Use the attributes `alt=""`, `role="none"` or include the image as a CSS `background-image` to identify it as being used purely for stylistic or decorative purposes and that it should be ignored by people using assistive technologies.
Information Links	HTML 5 Specification: 12.2 The @img@ element Accessible Rich Internet Applications (WAI-ARIA) 1.2: The @presentation@ role CSS Backgrounds and Borders Module Level 3: The @background-image@ property