diff --git a/app/assets/stylesheets/application.css b/app/assets/stylesheets/application.css
index 5f5340ada..390aafef4 100644
--- a/app/assets/stylesheets/application.css
+++ b/app/assets/stylesheets/application.css
@@ -140,7 +140,6 @@ pre, code {font-family: Consolas, Menlo, "Liberation Mono", Courier, monospace;}
 @media screen and (min-width: 2560px) {#sidebar{width: 380px;}}
 #sidebar h3{ font-size: 0.875rem; margin-top:14px; color: #666;  }
 #sidebar hr{ width: 100%; margin: 0 auto; height: 1px; background: #ccc; border: 0; }
-* html #sidebar hr{ width: 95%; position: relative; left: -6px; color: #ccc; }
 #sidebar .contextual { margin-right: 1em; }
 #sidebar ul, ul.flat {margin: 0;  padding: 0;}
 #sidebar ul li, ul.flat li {list-style-type:none;margin: 0px 2px 0px 0px; padding: 0px 0px 0px 0px;}
@@ -551,7 +550,6 @@ input, select, textarea, button { color: #333; background-color: #fff; border:1p
 select {
   -webkit-appearance: none;
   -moz-appearance: none;
-  -ms-appearance: none;
   -o-appearance: none;
   appearance: none;
   background-color: #fff;
@@ -2068,14 +2066,6 @@ img {
   box-shadow: 0 1px 2px rgba(0,0,0,0.05);
 }
 
-/* Fixes for IE 11 */
-@media all and (-ms-high-contrast: none), (-ms-high-contrast: active) {
-  select::-ms-expand {
-    display: none;
-  }
-  select[multiple=multiple] {padding-right: 0;}
-}
-
 /* tablesort */
 th[role=columnheader]:not(.no-sort) {
 	cursor: pointer;
@@ -2090,7 +2080,6 @@ th[role=columnheader]:not(.no-sort):after {
 	border-color: #404040 transparent;
 	display: none;
 	opacity: 0;
-	-ms-user-select: none;
 	-webkit-user-select: none;
 	-moz-user-select: none;
 	user-select: none;
diff --git a/app/assets/stylesheets/responsive.css b/app/assets/stylesheets/responsive.css
index 52107b709..b4ec6e607 100644
--- a/app/assets/stylesheets/responsive.css
+++ b/app/assets/stylesheets/responsive.css
@@ -164,7 +164,6 @@
     /* achieve dropdwon arrow by scaling a caret character */
     content: '^';
     -webkit-transform: scale(1,-.8);
-        -ms-transform: scale(1,-.8);
             transform: scale(1,-.8);
     text-align: right;
     pointer-events: none;
@@ -173,7 +172,6 @@
   }
   #project-jump.expanded .drdn-trigger:before {
     -webkit-transform: scale(1,.8);
-        -ms-transform: scale(1,.8);
             transform: scale(1,.8);
     padding-top:8px;
   }
@@ -398,13 +396,11 @@
 
   .flyout-menu #watchers {
     display: -webkit-flex;
-    display: -ms-flexbox;
     display: -webkit-box;
     display: flex;
     flex-direction: column;
 
     -webkit-flex-direction: column;
-    -ms-flex-direction: column;
     -webkit-box-orient: vertical;
     -webkit-box-direction: normal;
   }
@@ -412,7 +408,6 @@
   .flyout-menu #watchers .contextual {
     -webkit-box-ordinal-group: 4;
     -webkit-order: 3;
-    -ms-flex-order: 3;
     order: 3;
   }
 
@@ -422,17 +417,14 @@
 
   .flyout-menu #watchers ul li {
     display: -webkit-flex;
-    display: -ms-flexbox;
     display: -webkit-box;
     display: flex;
     flex-direction: row;
 
     -webkit-flex-direction: row;
-    -ms-flex-direction: row;
     -webkit-box-orient: horizontal;
     -webkit-box-direction: normal;
     -webkit-align-items: center;
-    -ms-flex-align: center;
     -webkit-box-align: center;
     align-items: center;
   }
@@ -492,7 +484,6 @@
   .flyout-menu__avatar {
     display: -webkit-box;
     display: -webkit-flex;
-    display: -ms-flexbox;
     display: flex;
     width: 100%;
     border-top: 1px solid rgba(255,255,255,.1);
@@ -528,7 +519,6 @@
     overflow: hidden;
     white-space: nowrap;
     -webkit-flex-grow: 1;
-        -ms-flex-grow: 1;
             flex-grow: 1;
   }