diff --git a/core.css b/core.css
index cd2d9218..b04cc9b6 100644
--- a/core.css
+++ b/core.css
@@ -15,6 +15,7 @@
   --mafs-origin-color: var(--mafs-fg);
   --mafs-line-color: #555;
   --mafs-line-stroke-dash-style: 4, 3;
+  --mafs-axis-stroke-width: 1px;
   --grid-line-subdivision-color: #222;
 
   --mafs-red: #f11d0e;
diff --git a/src/display/Coordinates/Cartesian.tsx b/src/display/Coordinates/Cartesian.tsx
index c359b3ac..70919fb3 100644
--- a/src/display/Coordinates/Cartesian.tsx
+++ b/src/display/Coordinates/Cartesian.tsx
@@ -94,7 +94,7 @@ export function Cartesian({
 
       <rect x={vxMin} y={vyMax} width={vxMax - vxMin} height={vyMin - vyMax} fill={`url(#${id})`} />
 
-      <g stroke="var(--mafs-origin-color)">
+      <g stroke="var(--mafs-origin-color)" strokeWidth="var(--mafs-axis-stroke-width)">
         {xAxisEnabled && xAxis.axis && <line x1={vxMin} y1={0} x2={vxMax} y2={0} />}
         {yAxisEnabled && yAxis.axis && <line x1={0} y1={vyMin} x2={0} y2={vyMax} />}
       </g>
diff --git a/src/display/Coordinates/Polar.tsx b/src/display/Coordinates/Polar.tsx
index ea4e5c42..6299d95c 100644
--- a/src/display/Coordinates/Polar.tsx
+++ b/src/display/Coordinates/Polar.tsx
@@ -93,7 +93,7 @@ export function PolarCoordinates({
         />
       ))}
 
-      <g stroke="var(--mafs-origin-color)">
+      <g stroke="var(--mafs-origin-color)" strokeWidth="var(--mafs-axis-stroke-width)">
         {xAxisEnabled && xAxis.axis && <line x1={vxMin} y1={0} x2={vxMax} y2={0} />}
         {yAxisEnabled && yAxis.axis && <line x1={0} y1={vyMin} x2={0} y2={vyMax} />}
       </g>