firefox和谷歌不显示body背景图片的解决方法

body {
background:#F5F5F5 url(../images/a_55.jpg) no-repeat bottom left;
margin:0;
padding:0;
font-family:"微软雅黑", "宋体", Arial, Verdana, sans-serif;
font-size:12px;
font-weight:normal;
color:#FFF;
text-align:left;
}

html,body {
background:#F5F5F5 url(../images/a_55.jpg) no-repeat bottom left;
margin:0;
padding:0;
font-family:"微软雅黑", "宋体", Arial, Verdana, sans-serif;
font-size:12px;
font-weight:normal;
color:#FFF;
text-align:left;
}