我无法改变我的标题（引导程序或容器）颜色

Question

我想改变标题的颜色，中间框的颜色（与标题的颜色相同）和背景颜色，我是html和css的新手请帮助我，我尝试了一切，如找到蓝色的十六进制代码（＃333580）并在css上搜索它，我能够找到它并替换为另一种颜色，但没有任何变化。

*{
    margin:0;
    padding:0;
}
body{


    background-image: url("../images/bg.jpg") repeat top left;
    background-color:#333;

}
h1{
    font-size:45px;
}
h1 span{
    color:#ffa800;
}

a{
    color:#777;
}
a:hover{
    color:#222;
}
p{
    padding:5px 0px;
}
.header{
margin-left:-20px;
}
.wrapper{
    width:960px;
    margin:10px auto;
    min-height:550px;
    background: red;
    overflow:auto;

}
.wrapper_admin{
    width:960px;
    margin:10px auto;
    min-height:550px;
    background: red;
    overflow:auto;

}
.box{
    width:49%;
}
.left{
    float:left;
}
.right{
    float:right;
}
.clear{
    clear:both;
}
a.back{
    color:#777;
    position:fixed;
    top:5px;
    right:10px;
    text-decoration:none;
}
/* Form Style */
.form_wrapper{
    background:#fff;
    border:1px solid #ddd;
    margin:0 auto;
    width:350px;
    font-size:16px;
    -moz-box-shadow:1px 1px 7px #ccc;
    -webkit-box-shadow:1px 1px 7px #ccc;
    box-shadow:1px 1px 7px #ccc;
}
.form_wrapper h3{
    padding:40px 30px 20px 30px;
    background-color:#444;
    color:#fff;
    font-size:25px;
    border-bottom:1px solid #ddd;
}
.form_wrapper form{
    display:none;
    background:#fff;
}
.form_wrapper .column{
    width:47%;
    float:left;
}
form.active{
    display:block;
}
form.login{
    width:350px;
}
form.register{
    width:550px;
}
form.forgot_password{
    width:300px;
}
.form_wrapper a{
    text-decoration:none;
    color:#777;
    font-size:12px;
}
.form_wrapper a:hover{
    color:#000;
}
.form_wrapper label{
    display:block;
    padding:10px 30px 0px 30px;
    margin:10px 0px 0px 0px;
}
.form_wrapper input[type="text"],
.form_wrapper input[type="password"]{
    border: solid 1px #E5E5E5;
    background: #FFFFFF;
    margin: 5px 30px 0px 30px;
    padding: 9px;
    display:block;
    font-size:16px;
    width:76%;
    background: 
        -webkit-gradient(
            linear,
            left top,
            left 25,
            from(#FFFFFF),
            color-stop(4%, #EEEEEE),
            to(#FFFFFF)
        );
    background: 
        -moz-linear-gradient(
            top,
            #FFFFFF,
            #EEEEEE 1px,
            #FFFFFF 25px
            );
    -moz-box-shadow: 0px 0px 8px #f0f0f0;
    -webkit-box-shadow: 0px 0px 8px #f0f0f0;
    box-shadow: 0px 0px 8px #f0f0f0;
}
.form_wrapper input[type="text"]:focus,
.form_wrapper input[type="password"]:focus{
    background:#feffef;
}
.form_wrapper .bottom{
    background-color:#444;
    border-top:1px solid #ddd;
    margin-top:20px;
    clear:both;
    color:#fff;
    text-shadow:1px 1px 1px #000;
}
.form_wrapper .bottom a{
    display:block;
    clear:both;
    padding:10px 30px;
    text-align:right;
    color:#ffa800;
    text-shadow:1px 1px 1px #000;
}
.form_wrapper a.forgot{
    float:right;
    font-style:italic;
    line-height:24px;
    color:#ffa800;
    text-shadow:1px 1px 1px #fff;
}
.form_wrapper a.forgot:hover{
    color:#000;
}
.form_wrapper div.remember{
    float:left;
    width:140px;
    margin:20px 0px 20px 30px;
    font-size:11px;
}
.form_wrapper div.remember input{
    float:left;
    margin:2px 5px 0px 0px;
}
.form_wrapper span.error{

    color:red;
    font-size:11px;
    font-style:italic;
    display:block;
    margin:15px 30px;
}
.form_wrapper input[type="submit"] {
    background: #e3e3e3;
    border: 1px solid #ccc;
    color: #333;
    font-family: "Trebuchet MS", "Myriad Pro", sans-serif;
    font-size: 14px;
    font-weight: bold;
    padding: 8px 0 9px;
    text-align: center;
    width: 150px;
    cursor:pointer;
    float:right;
    margin:15px 20px 10px 10px;
    text-shadow: 0px 1px 0px #fff;
    -moz-border-radius: 4px;
    -webkit-border-radius: 4px;
    border-radius: 4px;
    -moz-box-shadow: 0px 0px 2px #fff inset;
    -webkit-box-shadow: 0px 0px 2px #fff inset;
    box-shadow: 0px 0px 2px #fff inset;
}
.form_wrapper input[type="submit"]:hover {
    background: #d9d9d9;
    -moz-box-shadow: 0px 0px 2px #eaeaea inset;
    -webkit-box-shadow: 0px 0px 2px #eaeaea inset;
    box-shadow: 0px 0px 2px #eaeaea inset;
    color: #222;
}
.clock{
float:Right;
margin-right:-80px;
}
.date{
float:left;
margin-right:50px;
margin-top:30px;
}

.trans{
background:transparent;
border:none;
font-size:17px;
font-family:Century Gothic;

}
.popup
{
   position: fixed;
   width: 100%;
   opacity: 0.9;
   top:0px;
   min-height:200px;
   height:100%;
   z-index: 100;
   background: #FFFFFF;
   font-size: 20px;
   text-align: center;
/*    display:none; */

}

HTML LOGIN PAGE（index.php）

<html>
<body>
<link rel="stylesheet" type="text/css" href="admin/css/style.css" />
<html>      
<head>
<title>ABE E-Voting System</title>

<body>
<div class="navbar navbar-fixed-top">
<div class="navbar-inner">
<div class="container">

    <a class="brand">

    <img src="ABE.jpg" width="135" height="60">
    </a>
    <a class="brand">
    <h2>E-Voting System</h2>
    <div class="chmsc_nav"><font size="4" color="white">CABANATUAN</font></div>
    </a>

</div>
</div>
</div>

    <link rel="stylesheet" type="text/css" href="css/bootstrap.css" media="screen, projection" />
    <link rel="stylesheet" href="css/font-awesome.css"/>
    <link rel="stylesheet" type="text/css" href="css/Home.css" media="screen, projection" />

</body>
</html>
<div class="wrapper_admin">
</br>
</br>
</br>

<div id="element" class="hero-body-index">
<div id="loginform">
<p><font color="white"><h2>Login</h2></font></p>
<form action="loginprocess.php" method="POST" >
<table>
<tr><td><font color="white">Username<br>or USN:</font>&nbsp;&nbsp;</td><td><input type="text" name="username" id="username" maxlength="11" required></td></tr>
<tr><td><p><td></tr>
<tr><td><font color="white">Password:</font>&nbsp;&nbsp;</td><td><input type="Password" name="password" id="password" maxlength="50" required></td></tr>
<tr><td><p><td></tr>
<tr><td></td><td><button class="btn btn-primary" value="Login"><i class="icon-ok icon-large"></i>&nbsp;Login</button><p>
</td></tr>
<tr><td><font color="white" size=2>No account?<td><a href='register.php'><font size=2>Register!</a></font>
</td><tr>
</form>
</table>
</div>
</div>

</br>
</br>
</br>
</br>
</br>

<hr>
<footer>
<div class="foot_center"><p>Copyright &copy; 2018 ABE CABANATUAN
<br>
-------------Programmed by------------
<br>Jordan J. Santos - John Marlou Agulto</div>
</div>
</footer></div>

</body>
</html>