Update login.htm

src/admin/templets/login.htm

@@ -57,7 +57,7 @@
 								<img src="../apps/vdimgck.php" onclick="this.src='../apps/vdimgck.php?'+new Date().getTime()+Math.round(Math.random() * 10000)" title="验证码" id="validateimg">
 							</div>
 						</div>
-						<div><button type="submit" class="btn btn-success btn-md btn-block">登录</button></div>
+						<div><button type="submit" class="btn btn-success btn-block">登录</button></div>
 					</form>
 				</div>
 				<p><?php echo $cfg_powerby;?></p>