auto grid column sizes generated

screw manual work...
```
var val, out = {};

for(var i=1;i<=12;i++) {
  for(var j=1;j<=12;j++) {

if(j>i)
      continue;
    val = ("" + (100*j/i)).substr(0,5);

out[val] || (out[val] = []);
    out[val].push('col-' + j + '-' + i);

}
}
var result = '';
for(var x in out) {
  result += '.' +
out[x].join(', .');
  result += ' {\n\twidth: ' + x +
'%;\n}\n';
}
console.log(result);
```