How to make text in submit form, to be bigger size?

This is a normal submit form

i want to make the text 'Click here' to bigger size, any methode is ok.
i already tried using these below, but still not the right way


bold code <b>

or big code <big>

or h1 code <h1>

 

<style>
.custom-input-bold { font-weight:bold; }
.custom-input-big { font-size:24px; }
.custom-input-h1 { font-weight:bold;font-size:24px; }
</style>


<input class="custom-input-bold" type="submit" value="Click here">
<input class="custom-input-big" type="submit" value="Click here">
<input class="custom-input-h1" type="submit" value="Click here">

Code (markup):

Prolly not the bestest way to do it but works fine in chrome.

 

I think you can use css to change the style of input,
Agree with reply bellow..

 

cons1t is right you can apply css class to it or apply atyle attribute to input type

<input style="font-weight:bold;font-size:24px;" type="submit" value="Click here">