SASS Mixins - frequently used

_mixins.scss

@mixin vert_gradient($start, $finish){

  background: $start; /* Old browsers */
  background: -moz-linear-gradient(top,  $start 1%, $finish 100%); /* FF3.6+ */
  background: -webkit-gradient(linear, left top, left bottom, color-stop(1%,$start), color-stop(100%,$finish)); /* Chrome,Safari4+ */
  background: -webkit-linear-gradient(top,  $start 1%,$finish 100%); /* Chrome10+,Safari5.1+ */
  background: -o-linear-gradient(top,  $start 1%,$finish 100%); /* Opera 11.10+ */
  background: -ms-linear-gradient(top,  $start 1%,$finish 100%); /* IE10+ */
  background: linear-gradient(top,  $start 1%,$finish 100%); /* W3C */
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr = #{$start}, endColorstr = #{$finish}, GradientType = 0);
}

@mixin trans($property, $duration){

  -webkit-transition: #{$property} $duration;
  -moz-transition: #{$property} $duration;
  -o-transition: #{$property} $duration;
  -ms-transition: #{$property} $duration;
  transition: #{$property} $duration;
}
@mixin trans_all($duration){

  -webkit-transition-property: all;
  -moz-transition-property: all;
  -o-transition-property: all;
  -ms-transition-property: all;
  transition-property: all;
  -webkit-transition-duration: $duration;
  -moz-transition-duration: $duration;
  -o-transition-duration: $duration;
  -ms-transition-duration: $duration;
  transition-duration: $duration;
}

@mixin trans_delay($duration){
  -webkit-transition-delay: $duration;
  -moz-transition-delay: $duration;
  -o-transition-delay: $duration;
  -ms-transition-delay: $duration;
  transition-delay: $duration;

}