A basic template for styles I use alongside with Pure.css

styles.css

/*
When setting the primary font stack, apply it to the Pure grid units along
with `html`, `button`, `input`, `select`, and `textarea`. Pure Grids use
specific font stacks to ensure the greatest OS/browser compatibility.
*/
html, button, input, select, textarea,
.pure-g [class *= "pure-u"] {
  /* Set your content font stack here: */
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; 
}

/* Class for horizontally center (most) divs */
.center {
  margin auto;
}