Description and provision of style attributes in HTML5-

You can set the style attribute for all HTML elements to set the CSS style. The value must conform to the CSS style writing standard. The style attribute value set for the element overwrites the same css attributes set for it in other forms, such as external files .........,.

You can set the style attribute for all HTML elements to set the CSS style. The value must conform to the CSS style writing standard.
The style attribute value set for the element overwrites the same css attribute set for it in other forms, such as an external file.
It should be ensured that the element is still understandable and available after the attribute value of the element's style is removed.
Element. style returns a CSSStyleDeclaration object, which can be used to set or return the style attribute value of an element.
For example

Document. getElementById ('Id _ value'). style. display = "none ";