a ,.share-buttons .fa{
  @include transition-property(all);
  @include transition-duration(0.1s);
  @include transition-timing-function(ease-in-out);
}
button, input[type="button"],input[type="submit"]{
  @include transition-property(background);
  @include transition-duration(0.1s);
  @include transition-timing-function(ease-in-out);
    
}