How to set size of html button -

i have button:

 <a data-role="button" data-inline="true" href="gmail.html">                                     poczta gmail                 </a> 

how set size 1/3 of page width? edit: or set 200px?

you can set button have 33% width. of course need more specific selector a. example.

little demo

html:

<a data-role="button" data-inline="true" href="gmail.html">                     poczta gmail </a> 

css:

a {     width:33%;     display:inline-block; } 

edit (as question changed):

if want set 200px width can following:

a {     width:200px;     display:inline-block;     text-align:center; }