Changing WebGL canvas size

I tried webgl building, and created fix-sized canvas(960x600)

but I want to build scalable canvas(scaling with window size), and set margin 0.

(i want to make window sized canvas)

how do i get it?

You need to change your templates style.css file to use 100% width and height for the body and canvas,

/****************************************
  ==== RESETS
****************************************/

html,body,div,canvas { margin: 0; padding: 0; width: 100%; height: 100%;}
::-moz-selection { color: #333; text-shadow: none; }
::selection {  color: #333; text-shadow: none; }
.clear:after { visibility: hidden; display: block; font-size: 0; content: " "; clear: both; height: 0; }
.clear { display: inline-table; clear: both; }
/* Hides from IE-mac \*/ * html .clear { height: 1%; } .clear { display: block; } /* End hide from IE-mac */

/****************************************
  ==== LAYOUT
****************************************/

html, body { width: 100%; height: 100%; font-family: Helvetica, Verdana, Arial, sans-serif; }
body { }
canvas { margin: 0 0 0 0; position: absolute; z-index: 9; width: 100%; height: 100%;}

There’s good documentation on creating your own templates here