fix resolution typog

Author: jackbdu

hw7/index.html

@@ -14,7 +14,7 @@
       }
       main {
         position: relative;
-        width: 1240px;
+        width: 1280px;
         height: 720px;
       }
       nav {
@@ -392,7 +392,7 @@ <h1>Jack's Homework #7</h1>
         gl.drawArrays(Shape.type ? gl.TRIANGLE_STRIP : gl.TRIANGLES, 0, mesh.length / vertexSize);
       };
 
-      const videoWidth = 1240;
+      const videoWidth = 1280;
       const videoHeight = 720;
 
       const defaultHands = [