CSS解析錯誤，DIV背景顏色不顯示

-1

我的div的背景顏色是不是在Chrome顯示，我得到這個錯誤在W3C CSS驗證：
CSS解析錯誤，DIV背景顏色不顯示

16 .myfiles Value Error : background-color Parse Error background-color= #e9e9e9

這是div實現：

<div class="myfiles"> 
<table class="center"> 
<h2>My Files</h2> 
<?php 
$dir = "./userFiles/".$login; 
$files = array_diff(scandir($dir), array('..', '.')); 
foreach($files as $ind_file){ 
?> 
<tr><td><a href="<?php echo $dir."/".$ind_file;?>"><?php echo $ind_file;?></td></tr> 
<?php 
} 
?> 
</table> 
</div>

這裏是我的CSS文件：

body { 
    margin-top: 0px; 
    width: 100%; 
    height: 100%; 
    background-image: url("bg.jpg"); 
    font-family: Arial, Helvetica, sans-serif; 
    font-size : 14px; 
} 
h2{ 
    text-align: center; 
    color:#C64934; 
    margin-bottom:5px; 
} 
.myfiles{ 
height: 50%; 
background-color= #e9e9e9; 
} 
.center { 
    margin-left: auto; 
    margin-right: auto; 
} 
#save{ 
    background: #3498db; 
    background-image: -webkit-linear-gradient(top, #3498db, #2980b9); 
    background-image: -moz-linear-gradient(top, #3498db, #2980b9); 
    background-image: -ms-linear-gradient(top, #3498db, #2980b9); 
    background-image: -o-linear-gradient(top, #3498db, #2980b9); 
    background-image: linear-gradient(to bottom, #3498db, #2980b9); 
    -webkit-border-radius: 4; 
    -moz-border-radius: 4; 
    font-family: Arial; 
    color: #ffffff; 
    font-size: 14px; 
    padding: 6px 30px 6px 30px; 
} 
#save:hover{ 
    background: #3cb0fd; 
    background-image: -webkit-linear-gradient(top, #3cb0fd, #3498db); 
    background-image: -moz-linear-gradient(top, #3cb0fd, #3498db); 
    background-image: -ms-linear-gradient(top, #3cb0fd, #3498db); 
    background-image: -o-linear-gradient(top, #3cb0fd, #3498db); 
    background-image: linear-gradient(to bottom, #3cb0fd, #3498db); 
} 
#result { 
    margin-left: 80px; 
    border: 1px solid #cccccc; 
    width: 270px; 
    background: #E9ECEF; 
    font-family: Arial, Helvetica, sans-serif; 
    font-weight:bold; 
    font-size : 12px; 
    padding:5px; 
    margin-bottom:10px; 
} 
.text { 
    border: 1px solid #cccccc; 
} 
input::-webkit-input-placeholder{ 
    color:grey; 
} 
.values{ 
    font-family: verdana; 
    font-weight:normal; 
    font-size : 10px; 
} 
.key{ 
    font-family: verdana; 
    font-weight:bold; 
    font-size : 12px; 
    padding-bottom:15px; 
} 
#nav1 { 
    margin-top: 0px; 
    list-style-type: none; 
    float: right; 
    font-weight: bold; 
} 
#nav1 li{ 
    display: inline; 
    padding-right: 20px; 
    vertical-align: middle; 
} 
table { 
display: table; 
border-collapse: separate; 
border-spacing: 10px; 
} 
a, a:visited, a:link { 
color: #A21313; 
text-decoration: none; 
}

所以問題是，背景顏色我的.myfiles類不起作用。我試圖通過指定div的高度來解決它，但它沒有奏效。

請幫幫我。

來源

2014-12-05 zeee9