diff --git a/src/main.js b/src/main.js
index 7abbfa0..ac79cf5 100644
--- a/src/main.js
+++ b/src/main.js
@@ -561,9 +561,9 @@ class MiniGraphCard extends LitElement {
     for (let i = 0; i < numLines; i += 1) {
       const x = xRatio * (i + 0.5);
       if (i % grid_line_frequency > 0) {
-        lines.push(svg`<line x1=${x} y1="0" x2=${x} y2=${height} stroke="var(--divider-color)" stroke-width="0.5" opacity="0.5"/>`);
+        lines.push(svg`<line x1=${x} y1="0" x2=${x} y2=${height} stroke="var(--divider-color)" stroke-width="0.5"/>`);
       } else {
-        lines.push(svg`<line x1=${x} y1="0" x2=${x} y2=${height} stroke="rgb(from var(--divider-color) R G B /0.5)" stroke-width="0.5" opacity="1"/>`);
+        lines.push(svg`<line x1=${x} y1="0" x2=${x} y2=${height} stroke="rgb(from var(--divider-color) R G B /0.5)" stroke-width="0.5"/>`);
       }
     }