What is the expand collapse button?
This pattern creates a button that toggles an element as hidden (collapsed) or not hidden (expanded). The element's current state and changes in the element's state are communicated to screen reader users.
How do you expand text in HTML?
In HTML, you can change the size of text with the <font> tag using the size attribute. The size attribute specifies how large a font will be displayed in either relative or absolute terms.