diff --git a/src/scss/_definitions.scss b/src/scss/_definitions.scss
index f9e684d..79741c4 100644
--- a/src/scss/_definitions.scss
+++ b/src/scss/_definitions.scss
@@ -25,7 +25,8 @@ $lineheight_quarter: $lineheight/4;
 
 $card-header-margin: $lineheight;
 
-$border-radius: 12px;
+$card-radius: 12px;
+$btn-radius: 0px;
 $border-size: 0px;
 
 $fontweight_big: 300;
@@ -103,7 +104,7 @@ $screen-xxl-min: 1600px;
   border: $border-size solid rgba(0, 0, 0, 0.3)
 }
 
-@mixin border-radius() {
+@mixin border-radius($border-radius) {
   border-radius: $border-radius $border-radius $border-radius $border-radius;
 }
 
@@ -112,7 +113,7 @@ $screen-xxl-min: 1600px;
     z-index:1;
     overflow: visible;
     @include borders();
-    @include border-radius();
+    @include border-radius($btn-radius);
 
     background-color:transparent;
 
diff --git a/src/scss/components/_cards.scss b/src/scss/components/_cards.scss
index 7b90bfc..e054ffe 100644
--- a/src/scss/components/_cards.scss
+++ b/src/scss/components/_cards.scss
@@ -9,7 +9,7 @@ $card-bigpad: $lineheight;
 $card-smallpad: $lineheight_half;
 
 @mixin card($size) {
-    @include border-radius();
+    @include border-radius($card-radius);
     background-color: $color-background-alt;
     box-shadow: $large-shadow;
     border: none;
@@ -53,12 +53,12 @@ $card-smallpad: $lineheight_half;
     @include button-style($size);
     border-radius:0;
     &:first-child {
-      border-top-left-radius: $border-radius;
-      border-top-right-radius: $border-radius;
+      border-top-left-radius: $card-radius;
+      border-top-right-radius: $card-radius;
     }
     &:last-child {
-      border-bottom-left-radius: $border-radius;
-      border-bottom-right-radius: $border-radius;
+      border-bottom-left-radius: $card-radius;
+      border-bottom-right-radius: $card-radius;
     }
 
     h1, h2, h3, h4, h5, h6, h7, h8, h9, h10  {
diff --git a/src/scss/components/_previews.scss b/src/scss/components/_previews.scss
index c525862..9d4259d 100644
--- a/src/scss/components/_previews.scss
+++ b/src/scss/components/_previews.scss
@@ -79,7 +79,7 @@ $preview-height: 8*$lineheight;
     padding-top: $card-header-margin/2;
     backdrop-filter: none;
     transition: background-color 0.3s;
-    @include border-radius();
+    @include border-radius($card-radius);
 
     h1, h2, h3, h4, h5, h6 {
       color: $color-font-light;
@@ -119,7 +119,7 @@ $preview-height: 8*$lineheight;
   background-size: cover;
   min-height:100%;
   min-width:100%;
-  @include border-radius();
+  @include border-radius($card-radius);
 
   h1, h2, h3, h4, h5, h6 {
     margin-bottom:0px;
@@ -153,7 +153,7 @@ $preview-height: 8*$lineheight;
   color: $color-font-light;
   height:165px;
   overflow: hidden;
-  @include border-radius();
+  @include border-radius($card-radius);
 
   .metadata-pills {
     height:165px;