Remove IE9 browser hacks. (#21393)

3 files changed, 1 insertions, 21 deletions

diff --git a/scss/mixins/_gradients.scss b/scss/mixins/_gradients.scss
index ac96efe2d..ebe797aa7 100644
--- a/scss/mixins/_gradients.scss
+++ b/scss/mixins/_gradients.scss
@@ -3,11 +3,9 @@
 // Horizontal gradient, from left to right
 //
 // Creates two color stops, start and end, by specifying a color and position for each color stop.
-// Color stops are not available in IE9.
 @mixin gradient-x($start-color: #555, $end-color: #333, $start-percent: 0%, $end-percent: 100%) {
   background-image: linear-gradient(to right, $start-color $start-percent, $end-color $end-percent);
   background-repeat: repeat-x;
-  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=1); // IE9
 }
 
 // Vertical gradient, from top to bottom
@@ -17,7 +15,6 @@
 @mixin gradient-y($start-color: #555, $end-color: #333, $start-percent: 0%, $end-percent: 100%) {
   background-image: linear-gradient(to bottom, $start-color $start-percent, $end-color $end-percent);
   background-repeat: repeat-x;
-  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=0); // IE9
 }
 
 @mixin gradient-directional($start-color: #555, $end-color: #333, $deg: 45deg) {
@@ -27,12 +24,10 @@
 @mixin gradient-x-three-colors($start-color: #00b3ee, $mid-color: #7a43b6, $color-stop: 50%, $end-color: #c3325f) {
   background-image: linear-gradient(to right, $start-color, $mid-color $color-stop, $end-color);
   background-repeat: no-repeat;
-  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=1); // IE9 gets no color-stop at all for proper fallback
 }
 @mixin gradient-y-three-colors($start-color: #00b3ee, $mid-color: #7a43b6, $color-stop: 50%, $end-color: #c3325f) {
   background-image: linear-gradient($start-color, $mid-color $color-stop, $end-color);
   background-repeat: no-repeat;
-  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=0); // IE9 gets no color-stop at all for proper fallback
 }
 @mixin gradient-radial($inner-color: #555, $outer-color: #333) {
   background-image: radial-gradient(circle, $inner-color, $outer-color);
@@ -40,4 +35,4 @@
 }
 @mixin gradient-striped($color: rgba(255,255,255,.15), $angle: 45deg) {
   background-image: linear-gradient($angle, $color 25%, transparent 25%, transparent 50%, $color 50%, $color 75%, transparent 75%, transparent);
-}
\ No newline at end of file
+}
diff --git a/scss/mixins/_progress.scss b/scss/mixins/_progress.scss
index 9622d790b..567467986 100644
--- a/scss/mixins/_progress.scss
+++ b/scss/mixins/_progress.scss
@@ -13,11 +13,4 @@
   &[value]::-ms-fill {
     background-color: $color;
   }
-
-  // IE9
-  @media screen and (min-width:0\0) {
-    .progress-bar {
-      background-color: $color;
-    }
-  }
 }
diff --git a/scss/mixins/_reset-filter.scss b/scss/mixins/_reset-filter.scss
deleted file mode 100644
index 044b349c0..000000000
--- a/scss/mixins/_reset-filter.scss
+++ /dev/null
@@ -1,8 +0,0 @@
-// Reset filters for IE
-//
-// When you need to remove a gradient background, do not forget to use this to reset
-// the IE filter for IE9.
-
-@mixin reset-filter() {
-  filter: "progid:DXImageTransform.Microsoft.gradient(enabled = false)";
-}