Html Input Control Doesn't Have Inner Html Tags.
But In Button Control U Can Add Inner Html Tags.
"<input type="button" value="Hello"/>
<br/>
<button><b style="color:red;">Hello</b></button>"
Exa.
<input type="button" value="Hello"/>
<br/>
<button>"color: rgba(255, 0, 0, 1)">Hello</button>