diff --git a/src/web/stylesheets/themes/_classic.css b/src/web/stylesheets/themes/_classic.css
index 3986a19e..3b3bd555 100755
--- a/src/web/stylesheets/themes/_classic.css
+++ b/src/web/stylesheets/themes/_classic.css
@@ -125,7 +125,7 @@
 
     /* Misc. */
     --drop-file-border-colour: #3a87ad;
-    --table-border-colour: rgb(0, 0, 0, 0.1);
+    --table-border-colour: #ccc;
     --popover-background: #fff;
     --popover-border-colour: #ccc;
     --code-background: #f9f2f4;
diff --git a/src/web/stylesheets/themes/_dark.css b/src/web/stylesheets/themes/_dark.css
index e37025d6..10340ea8 100755
--- a/src/web/stylesheets/themes/_dark.css
+++ b/src/web/stylesheets/themes/_dark.css
@@ -121,7 +121,7 @@
 
     /* Misc. */
     --drop-file-border-colour: #0e639c;
-    --table-border-colour: rgb(255, 255, 255, 0.10);
+    --table-border-colour: #555;
     --popover-background: #444;
     --popover-border-colour: #555;
     --code-background: #0e639c;
diff --git a/src/web/stylesheets/themes/_solarizedDark.css b/src/web/stylesheets/themes/_solarizedDark.css
index a370258a..3b7d4338 100755
--- a/src/web/stylesheets/themes/_solarizedDark.css
+++ b/src/web/stylesheets/themes/_solarizedDark.css
@@ -138,7 +138,7 @@
 
     /* Misc. */
     --drop-file-border-colour: var(--base01);
-    --table-border-colour: rgba(131, 148, 150, 0.4);
+    --table-border-colour: var(--base01);
     --popover-background: var(--base02);
     --popover-border-colour: var(--base01);
     --code-background: var(--base03);
diff --git a/src/web/stylesheets/themes/_solarizedLight.css b/src/web/stylesheets/themes/_solarizedLight.css
index 8ce4ac1f..00b86091 100755
--- a/src/web/stylesheets/themes/_solarizedLight.css
+++ b/src/web/stylesheets/themes/_solarizedLight.css
@@ -140,7 +140,7 @@
 
     /* Misc. */
     --drop-file-border-colour: var(--base1);
-    --table-border-colour: rgba(131, 148, 150, 0.4);
+    --table-border-colour: var(--base1);
     --popover-background: var(--base2);
     --popover-border-colour: var(--base1);
     --code-background: var(--base3);