diff --git a/samples/doughnut.html b/samples/doughnut.html
index 3972fbc0c..facce521c 100644
--- a/samples/doughnut.html
+++ b/samples/doughnut.html
@@ -18,8 +18,8 @@
 </head>
 
 <body>
-    <div id="canvas-holder" style="width:50%">
-        <canvas id="chart-area" width="500" height="500" />
+    <div id="canvas-holder" style="width:100%">
+        <canvas id="chart-area" />
     </div>
     <button id="randomizeData">Randomize Data</button>
     <button id="addDataset">Add Dataset</button>
diff --git a/samples/polar-area.html b/samples/polar-area.html
index 678aac69c..9fd4428e3 100644
--- a/samples/polar-area.html
+++ b/samples/polar-area.html
@@ -8,7 +8,7 @@
 </head>
 
 <body>
-    <div id="canvas-holder" style="width:50%" width="50%">
+    <div id="canvas-holder" style="width:100%">
         <canvas id="chart-area"></canvas>
     </div>
     <button id="randomizeData">Randomize Data</button>
diff --git a/samples/radar.html b/samples/radar.html
index eab9a8655..4fd712ace 100644
--- a/samples/radar.html
+++ b/samples/radar.html
@@ -8,8 +8,8 @@
 </head>
 
 <body>
-    <div style="width:50%">
-        <canvas id="canvas" height="450" width="450"></canvas>
+    <div style="width:100%">
+        <canvas id="canvas"></canvas>
     </div>
     <button id="randomizeData">Randomize Data</button>
     <button id="addDataset">Add Dataset</button>
