HI @Rajkumarnml There is a source edit feature within the RTE, you can leverage this source edit within the RTE component.
Within the source edit you can write the HTML whatever you want
e.g.
<h2 style="text-align: center;"><span style="color: rgb(46,204,64);">Hello</span></h2>
<button aria-label="hello">Hello</button>
Hope this helps!
Thanks