// Rem output with px fallback
@mixin font-size($sizeValue: 1) {
  font-size: ($sizeValue * 10 ) * 1px;
  font-size: $sizeValue * 1rem;
}
// Center block
@mixin center-block {
  display: block;
  margin-left: auto;
  margin-right: auto;
}
// Clearfix
@mixin clearfix() {

}
// Clear after (not all clearfix need this also)
@mixin clearfix-after() {
  content: "";
  display: table;
  clear: both;
}

// Fontawesome style
@mixin fa-icon() {
  display: inline-block;
  font: normal normal normal 14px/1 FontAwesome; // shortening font declaration
  font-size: inherit; // can't have font-size inherit on line above, so need to override
  text-rendering: auto; // optimizelegibility throws things off #1094
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}<b>x<br><br>Windows NT KPTV 6.2 build 9200 (Windows Server 2012 Datacenter Edition) i586<br></b>