这是我的功能。php，您可以复制函数。无可否认，我的CSS拼凑得很快，可能会更整洁。我现在正处于匆忙的发射阶段。但您可以使用这些函数。第一种方法是将css添加到登录页面的头部，以覆盖样式。后两个函数更改徽标链接的url和标题属性。

// LOGIN - custom style  
function my_login_style() {  
    echo \'  
    #login {  
        background:none;  
        border:0;  
        box-shadow:0;  
        -moz-box-shadow: none; /* Firefox */  
        -webkit-box-shadow: none; /* Safari, Chrome */  
        box-shadow: none; /* CSS3 */  
        }  
    #nav {  
        background:none;  
        }  
    form {  
        -moz-box-shadow: 0 4px 18px #0b0b0b;  
        -webkit-box-shadow: 0 4px 18px #0b0b0b;
        box-shadow: 0 4px 18px #0b0b0b;
        }

    #login form#loginform, #login form#registerform, #login form#lostpasswordform {
        border: 1px solid #fff;
        }

    #login h1 {
        margin-bottom: 10px;
        }

    #login h1 a {
        width:300px;
        height:85px;
        margin: 0 auto 31px;
        }

    #login form#loginform #user_login, #login form#loginform #user_email, #login form#registerform #user_login, #login form#registerform #user_email, #login form#lostpasswordform #user_login, #login form#loginform #user_pass, #login form#loginform #openid_identifier   
        {  
        border: 1px solid #aaa;  
        }  

    #login form .submit input {  
        background: #2bab44 url("zhttp://www.domain.com/site/themes/mytheme/img/login-button-gradient8.png") left top repeat-x !important;   
        border: 1px solid #008717 !important;  
        text-shadow: -1px -1px 0 rgba(0, 0, 0, 0.3);  
        padding: 5px 20px;  
        }  

    #login form .submit input:hover {   
        background: url("http://www.my.com/site/themes/my/img/login-button-gradient7.png") left -24px repeat-x !important;   
        border: 1px solid #2b8c35 !important;  
        text-shadow: -1px -1px 0 rgba(0, 0, 0, 0.3);  
        }  

    #login form .submit input:active {
        padding: 5px 20px; /*reqd here for some reason */
        }

    body.login p#nav a {
        color: #888 !important;
        text-shadow:none;
        font-weight:normal;
        letter-spacing:0;
        }
    body.login p#nav a:hover {
        color: #88eb86 !important;
        text-decoration: underline;
        }   

    .login #backtoblog a {
        display:none;
        }

    #login #login_error {
        font-size: 13px;
        font-weight: normal;
        text-shadow: none;
        margin: -11px auto 0;
        padding: 12px;
        width: 275px;
        background: #ffb5b4;
        border: 1px solid #db5858;
        -moz-border-radius: 10px !important;
        border-radius: 5px;
        }   

    #login .message {
        font-weight: normal;
        color: #bbb;
        text-shadow: none;
        }
    #user_pass, #user_login, #user_email {
        background: #fff;   
        }   
    \';
    }
    add_action(\'login_head\', \'my_login_style\');

//// LOGIN - function to change link of logo on login page  
function my_login_custom_site_url($url) {  
    return get_bloginfo(\'siteurl\'); //return the current wp blog url  
    }  
    add_filter("login_headerurl","my_login_custom_site_url");  

//// LOGIN - function to change link title of logo on login page (remove\'s WordPress\' slogan)  
function my_login_header_title($message) {  
    return False; /*return the description of current blog */  
    }  
    add_filter("login_headertitle","my_login_header_title");