body {
    /*font-family: "Source Sans Pro", sans-serif;*/
    font-family: "Lato", sans-serif;
}

h1, h2, h3, h4, h5 {
    /*font-family: "Source Serif Pro", serif;*/
    font-family: "Lato", serif;
}

/*a[href^="mailto:"]
{ 
  font-family: "Lato";
  color: red;
  font-size: 11px;
}*/

div.container {
    max-width: 700px;
}

<link href='http://fonts.googleapis.com/css?family=Source+Sans+Pro:400,700,400italic|Source+Serif+Pro' rel='stylesheet' type='text/css'>