diff --git a/SD_ROOT/wz_mini/www/car/car.html b/SD_ROOT/wz_mini/www/car/car.html
index d524354..8a2f292 100644
--- a/SD_ROOT/wz_mini/www/car/car.html
+++ b/SD_ROOT/wz_mini/www/car/car.html
@@ -12,26 +12,26 @@
 
 <h2>wz_mini Car Control</h2>
 
-<table style="width: 55%; border-collapse: collapse; float: left;" border="1">
+<table class="wz_car_TABLE" border="1">
 <tbody>
 <tr style="height: 21px;">
-<td style="width: 33.3333%; height: 21px; text-align: left;"><button id="forward_left" class="button">q: forward left</button></td>
-<td style="width: 33.3333%; height: 21px; text-align: center;"><button id="forward" class="button">w: forward</button></td>
-<td style="width: 33.3333%; height: 21px; text-align: right;"><button id="forward_right" class="button">e: forward right</button></td>
+<td style="width: 33.3333%; height: 21px; text-align: left;"><button id="forward_left" class="wz_car_BUTTON">q: forward left</button></td>
+<td style="width: 33.3333%; height: 21px; text-align: center;"><button id="forward" class="wz_car_BUTTON">w: forward</button></td>
+<td style="width: 33.3333%; height: 21px; text-align: right;"><button id="forward_right" class="wz_car_BUTTON">e: forward right</button></td>
 </tr>
 <tr style="height: 18px;">
-<td style="width: 33.3333%; height: 18px; text-align: left;"><button class="button" id="left">a; left</button></td>
-<td style="width: 33.3333%; height: 18px; text-align: center;"><button class="button" id="reverse">s: rear</button></td>
-<td style="width: 33.3333%; height: 18px; text-align: right;"><button class="button" id="right">d: right</button></td>
+<td style="width: 33.3333%; height: 18px; text-align: left;"><button id="left" class="wz_car_BUTTON">a; left</button></td>
+<td style="width: 33.3333%; height: 18px; text-align: center;"><button id="reverse" class="wz_car_BUTTON">s: rear</button></td>
+<td style="width: 33.3333%; height: 18px; text-align: right;"><button id="right" class="wz_car_BUTTON">d: right</button></td>
 </tr>
 <tr style="height: 18px;">
-<td style="width: 33.3333%; height: 18px; text-align: left;"><button class="button" id="reverse_left">z: rear left</button></td>
-<td style="width: 33.3333%; height: 18px; text-align: center;"><button class="button" id="all_stop">x: all stop</button></td>
-<td style="width: 33.3333%; height: 18px; text-align: right;"><button class="button" id="reverse_right">c: rear right</button></td>
+<td style="width: 33.3333%; height: 18px; text-align: left;"><button id="reverse_left" class="wz_car_BUTTON">z: rear left</button></td>
+<td style="width: 33.3333%; height: 18px; text-align: center;"><button id="all_stop" class="wz_car_BUTTON">x: all stop</button></td>
+<td style="width: 33.3333%; height: 18px; text-align: right;"><button  id="reverse_right" class="wz_car_BUTTON">c: rear right</button></td>
 </tr>
-<td style="width: 33.3333%; height: 21px; text-align: left;"><button id="headlight" class="button">H: headlight</button></td>
-<td style="width: 33.3333%; height: 18px; text-align: center;"><button class="button" id="irled">j: ir led</button></td>
-<td style="width: 33.3333%; height: 18px; text-align: center;"><button class="button" id="honk">b: honk</button></td>
+<td style="width: 33.3333%; height: 21px; text-align: left;"><button id="headlight" class="wz_car_BUTTON">H: headlight</button></td>
+<td style="width: 33.3333%; height: 18px; text-align: center;"><button  id="irled" class="wz_car_BUTTON">j: ir led</button></td>
+<td style="width: 33.3333%; height: 18px; text-align: center;"><button id="honk" class="wz_car_BUTTON">b: honk</button></td>
 </tr>
 </tbody>
 </table>