Created fake border with before and after pseudoelements for sticky table cells

src/utils/base.scss

@@ -13,6 +13,7 @@ $mainColor: #4696e5;
 $lightHoverColor: #eee;
 $lightGrey: #ddd;
 $dangerColor: #dc3545;
+$mediumGrey: #dee2e6;
 
 // Misc
 $headerHeight: 57px;

src/utils/mixins/sticky-cell.scss

@@ -0,0 +1,37 @@
+@import "../base";
+
+@mixin sticky-cell() {
+  z-index: 1;
+  border: none !important;
+  position: relative;
+
+  &:before {
+    content: '';
+    position: absolute;
+    top: -1px;
+    left: 0;
+    bottom: -1px;
+    right: -1px;
+    background: $mediumGrey;
+    z-index: -2;
+  }
+
+  &:first-child:before {
+    left: -1px;
+  }
+
+  &:after {
+    content: '';
+    position: absolute;
+    top: 0;
+    left: 1px;
+    bottom: 0;
+    right: 0;
+    background: white;
+    z-index: -1;
+  }
+
+  &:first-child:after {
+    left: 0;
+  }
+}