#mainContent
{
    background: #fff0; /* 导航菜单半透明*/
}
/* 设置签名格式 定制css样式 */

#MySignature {
    display: none;
    background-color: #B2E866;
    border-radius: 10px;
    box-shadow: 1px 1px 1px #6B6B6B;
    padding: 10px;
    line-height: 1.5;
    text-shadow: 1px 1px 1px #FFF;
    font-size: 16px;
    font-family: 'Microsoft Yahei';
}
/* <!-- 小老鼠游戏控件 -->
<div className="sidebarMouse"><object type="application/x-shockwave-flash" style="outline:none;"        
  data="https://files.cnblogs.com/files/jingmoxukong/mouse.swf?up_bodyColor=f0e9cc&amp;up_feetColor=D4C898&amp;up_eyeColor=000567&amp;up_wheelSpokeColor=DEDEDE&amp;up_wheelColor=FFFFFF&amp;up_waterColor=E0EFFF&amp;up_earColor=b0c4de&amp;up_wheelOuterColor=FF4D4D&amp;up_snoutColor=F7F4E9&amp;up_bgColor=F0E4E4&amp;up_foodColor=cba920&amp;up_wheelCenterColor=E4EB2F&amp;up_tailColor=E6DEBE&amp;"          width="240" height="160"><param name="movie"           value="https://files.cnblogs.com/files/jingmoxukong/mouse.swf?up_bodyColor=f0e9cc&amp;up_feetColor=D4C898&amp;up_eyeColor=000567&amp;up_wheelSpokeColor=DEDEDE&amp;up_wheelColor=FFFFFF&amp;up_waterColor=E0EFFF&amp;up_earColor=b0c4de&amp;up_wheelOuterColor=FF4D4D&amp;up_snoutColor=F7F4E9&amp;up_bgColor=F0E4E4&amp;up_foodColor=cba920&amp;up_wheelCenterColor=E4EB2E&amp;up_tailColor=E6DEBE&amp;"><param name="AllowScriptAccess" value="always"><param name="wmode" value="opaque"></object></div><p></p>
点击黄色小点让小老鼠跑步，点击小老鼠周围即可喂食。 */
a:hover {
        cursor:url(https://files.cnblogs.com/files/laoguantongxiegogo/click_24px_1231393_easyicon.net.ico),auto;
 }
body {
        cursor:url(https://files.cnblogs.com/files/laoguantongxiegogo/pointer_24px_1231389_easyicon.net.ico),auto;
 }
 <!-- 返回顶部 -->
<style>
#back-top {
     position: fixed;
     bottom: 10px;
     right: 8px;
     z-index: 99;
}
#back-top span {
     width: 70px;
     height: 140px;
     display: block;
     background:url(https://images.cnblogs.com/cnblogs_com/laoguantongxiegogo/1667745/o_200312023941%E8%BF%94%E5%9B%9E%E9%A1%B6%E9%83%A8.png) no-repeat center center;
}
#back-top a{outline:none}
</style>
<script type="text/javascript">
$(function() {
    // hide #back-top first
    $("#back-top").hide();
    // fade in #back-top
    $(window).scroll(function() {
        if ($(this).scrollTop() > 400) {
            $('#back-top').fadeIn();
        } else {
            $('#back-top').fadeOut();
        }
    });
    // scroll body to 0px on click
    $('#back-top a').click(function() {
        $('body,html').animate({
            scrollTop: 0
        }, 500);
        return false;
    });
});
</script>
<p id="back-top" style="display:none"><a href="#top"><span></span></a></p>

/* 定制博客背景图片，url里面是你的图片位置信息 */
body{
    background-image: url("https://images.cnblogs.com/cnblogs_com/blogs/731021/galleries/2099689/o_220125081616_9.jpg");
    background-position: initial;
    background-size: cover;
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-origin: initial;
    background-clip: initial;
    height:100%;
    width:100%;
    }