Fix slight error in calculating width and height

xray.js

@@ -17,7 +17,7 @@ let scale;
 
 document.addEventListener("DOMContentLoaded", e => {
     document.querySelector("#reset-button").addEventListener("click", reset);
-    
+
     document.querySelector("#load-button").addEventListener("click", e => {
         console.log("Trying to load...");
         const baseInput = document.querySelector("#base-url").value;
@@ -329,11 +329,10 @@ function setup() {
     const scaleH = availableHeight / baseImg.height;
     scale = Math.min(scaleW, scaleH);
 
-    const width = availableWidth * scale / scaleW;
-    const height = availableHeight * scale / scaleH;
+    width = Math.floor(availableWidth * scale / scaleW);
+    height = Math.floor(availableHeight * scale / scaleH);
 
     [baseCtx, baseCtxResized, overlayCtx, overlayCtxResized].forEach(ctx => {
-        console.log(ctx.canvas)
         ctx.canvas.width = width;
         ctx.canvas.height = height;
         ctx.canvas.style.left = (availableWidth - width) / 2 + "px";