WordPress后台页面美化

修改登陆界面的背景图片以及主题风格

在外观--编辑--模板函数，里面新增加如下内容

或者在改配置文件中新增如下内容functions.php

//自定义登录页面
function custom_login_logo() { echo '<link rel="stylesheet" id="wp-admin-css" href="'.get_bloginfo('template_directory').'/css/login.css?v=2" type="text/css" />';}
add_action('login_head', 'custom_login_logo');

在主题的css目录中新增login.css文件如下内容

body,textarea{font-size:14px;font-family:"Microsoft Yahei",宋体,PMingLiU,Verdana,Arial,Helvetica,sans-serif !important;}
input{font-size:14px;font-family:Tahoma,Arial,sans-serif !important;}
/*body{background:#92C1D1 url("https://picsum.photos/200/300/?random") fixed center top no-repeat !important;}*/
body{background: url('https://picsum.photos/1920/1080/?random');width:100%;height:100%;background-image:url('https://picsum.photos/1920/1080/?random');-moz-background-size: 100% 100%;-o-background-size: 100% 100%;-webkit-background-size: 100% 100%;background-size: 100% 100%;-moz-border-image: url('https://picsum.photos/1920/1080/?random') 0;background-repeat:no-repeat\9;background-image:none\9;}
.login h1 a {background-image:url('/wp-content/uploads/2018/10/log20181031150644721.png') !important;background-size:170px 35px;background-position:top center;
background-repeat:no-repeat;width:170px;margin:auto;margin-top:35px;height:35px;text-indent:-9999px;overflow:hidden;padding-bottom:15px;display:block;}
#login {
width:320px;
background:rgba(0, 0, 0, 0.2);
padding:0 20px 100% 12px;
margin:auto;
top:0px;
right:15%;
position:fixed;
box-shadow:0px 0px 5px 0px   #333;
}
.login form {
margin-left:8px;
padding:26px 24px 46px;
font-weight:normal;
background:rgba(255, 255, 255, 0.2);
border:none;
-moz-box-shadow:none;
-webkit-box-shadow:none;
box-shadow:#000 0 0px 10px -1px;}
#loginform {-webkit-border-radius:0px;border-radius:0px;}
.login form .input, .login input[type="text"] {
color:#555;
font-weight:200;
font-size:24px;
line-height:1;
width:100%;
padding:5px;
margin-top:2px;
margin-right:6px;
margin-bottom:16px;
border:1px solid #FFF;
background:#FFF !important;
outline:0;
-moz-box-shadow:none;
-webkit-box-shadow:none;
box-shadow:none;
}
.login form .input, .login input[type="text"] {
font-size:17px;
padding-bottom:11px;
padding-top:11px;
text-indent:3px; }
.login form .input, .login input[type="text"] {border:2px solid #DCE4EC;}
input.button-primary{
margin-top:8px;
border:#000;
font-weight:bold;
text-shadow:#FFF 0 0px 10px;}
.login .button-primary {
font-size:14px!important;
line-height:22px;
padding:8px 117px;
border-radius:0px;
}
input.button-primary {
    background:rgba(255, 255, 255, 0.5);color:#000; }
input.button-primary:hover,input.button-primary:focus {
      background:rgba(255, 255, 255, 0.8);color:#000; }
input.button-primary:active{
      background:rgba(255, 255, 255, 0.2);color:#000; }
.login form .forgetmenot {
font-weight:normal;
float:none;
margin-top:-10px;
}
.login #nav, .login #backtoblog {text-shadow:none;float:right;margin:0 30px 0 0px;padding:16px 0px 0 20px;}
.login #nav  a, .login #backtoblog  a{color:#FFF!important;text-decoration:none;}
.login #nav  a:hover, .login #backtoblog  a:hover{color:#444!important;text-decoration:none;}
div.error, .login #login_error {display:none;}
div.updated, .login .message {background-color: #E0FFE1;border-color: #ACE655;}
.wumii-footer{display:none !important;}