<style>
    .box{
        position:relative;
        border:1px solid red;
    }
    .box::before{
        content:attr(title);
        position:absolute;
        left:50%;
        transform:translateX(-50%);
        -webkit-transform:translate(-50%,-50%);
        padding:0 10px;
        background-color:#fff;
    }
</style>
<div class="box" title="使用方法">
    <ol>
        <li>这是啥</li>
        <li>干啥</li>
    </ol>
</div>

这个代码可用作文本提醒，可参照文章Typecho 代码实现文章页面添加提醒功能 - Eonegh's Blog

/**logo闪光效果CSS**/
.logo:before {
 content: "";
 position: absolute;
 width: 140px;
 height: 10px;
 background-color: rgba(255, 255, 255, 0.5);
 -webkit-transform: rotate(-45deg);
 transform: rotate(-45deg);
 -webkit-animation: blink 1s ease-in 1s infinite;
 animation: blink 1s ease-in 1s infinite;
}
 
@-webkit-keyframes blink {
 from {left: 10px;top: 0;}
 to {left: 320px;top: 0;}
}
@-o-keyframes blink {
 from {left: 10px;top: 0;}
 to {left: 320px;top: 0;}
}
@-moz-keyframes blink {
 from {left: 10px;top: 0;}
 to {left: 320px;top: 0;}
}
@keyframes blink {
 from {left: -100px;top: 0;}
 to {left: 320px;top: 0;}
}

使用：

<div class="logo">内容<div>

<script type="text/javascript">
      var ico = document.querySelector('link[rel="icon"]');  //获取原始ico属性
      var OriginTitile = document.title;
      var titleTime;
      document.addEventListener('visibilitychange', function() {
          if (document.hidden) {
          ico.href='./xxx.ico';  //自定义离开页面ico地址
              document.title = '此处为自定义内容' ;
              clearTimeout(titleTime);
          }
          else {
          ico.href='./xxx.cio';  //此处为原始站点ico地址
              document.title = '自定义内容'+OriginTitile;  //此处为原始站点title数据
              titleTime = setTimeout(function() {
                  document.title = OriginTitile;
              }, 2000);
          }
      });
    </script>

<script>
var enter = '(*゜ロ゜)ノ被发现了~';
var leave = '(つ ェ ⊂)我藏好了哦~';
var clock;
var normal_title;
window.onload = function(){
    if (document.visibilityState == 'hidden' && !(document.title == leave)) {
        normal_title = document.title;
        document.title = leave;
    }
}
document.addEventListener('visibilitychange',function() {
    if (document.visibilityState == 'hidden') {
      if (!(document.title == enter)) {
          normal_title = document.title;
      }
      document.title = leave;
      clearTimeout(clock);
    } else {
        if (!(document.title == leave)) {
            normal_title = document.title;
        }
       document.title = enter;
       clock = setTimeout(function()
       {
           if (!(document.visibilityState == 'hidden')) {
               document.title=normal_title;
           }
       },2500);
    }
});
</script>

<style type="text/css">
    a {text-decoration: none;}
    div.usercm{background-repeat:no-repeat;background-position:center center;background-size:cover;background-color:#fff;font-size:13px!important;width:130px;-moz-box-shadow:1px 1px 3px rgba
(0,0,0,.3);box-shadow:0px 0px 15px #333;position:absolute;display:none;z-index:10000;opacity:0.9;border-radius: 8px;}
    div.usercm ul{list-style-type:none;list-style-position:outside;margin:0px;padding:0px;display:block}
    div.usercm ul li{margin:0px;padding:0px;line-height:35px;}
    div.usercm ul li a{color:#666;padding:0 15px;display:block}
    div.usercm ul li a:hover{color:#fff;background:rgba(249,129,234,0.88);border-radius: 8px}
    div.usercm ul li a i{margin-right:10px}
    a.disabled{color:#c8c8c8!important;cursor:not-allowed}
    a.disabled:hover{background-color:rgba(255,11,11,0)!important}
    div.usercm{background:#fff !important;}
    </style>
<div class="usercm" style="left: 199px; top: 5px; display: none;">
    <ul>
        <li><a href="https://eonegh.com/"><i class="fa fa-home fa-fw"></i><span>首页</span></a></li>
        <li><a href="javascript:void(0);" onclick="getSelect();"><i class="fa fa-file fa-fw"></i><span>复制</span></a></li>
        <li><a href="javascript:void(0);" onclick="baiduSearch();"><i class="fa fa-search fa-fw"></i><span>百度</span></a></li>
        <li><a href="javascript:void(0);" onclick="googleSearch();"><i class="fa fa-google fa-fw"></i><span>谷歌</span></a></li>
        <li><a href="javascript:history.go(1);"><i class="fa fa-arrow-right fa-fw"></i><span>前进</span></a></li>
        <li><a href="javascript:history.go(-1);"><i class="fa fa-arrow-left fa-fw"></i><span>后退</span></a></li>
        <li style="border-bottom:1px solid gray"><a href="javascript:window.location.reload();"><i class="fa fa-refresh fa-fw"></i><span>刷新</span></a></li>
        <li><a href="https://eonegh.com/related-links.html"><i class="fa fa-user fa-fw"></i><span>和我当邻居</span></a></li>  
           <li><a href="https://eonegh.com/message.html"><i class="fa fa-pencil fa-fw"></i><span>给我留言吧</span></a></li>
    </ul>
</div>
<script type="text/javascript">
    (function(a) {
        a.extend({
            mouseMoveShow: function(b) {
                var d = 0,
                    c = 0,
                    h = 0,
                    k = 0,
                    e = 0,
                    f = 0;
                a(window).mousemove(function(g) {
                    d = a(window).width();
                    c = a(window).height();
                    h = g.clientX;
                    k = g.clientY;
                    e = g.pageX;
                    f = g.pageY;
                    h + a(b).width() >= d && (e = e - a(b).width() - 5);
                    k + a(b).height() >= c && (f = f - a(b).height() - 5);
                    a("html").on({
                        contextmenu: function(c) {
                            3 == c.which && a(b).css({
                                left: e,
                                top: f
                            }).show()
                        },
                        click: function() {
                            a(b).hide()
                        }
                    })
                })
            },
            disabledContextMenu: function() {
                window.oncontextmenu = function() {
                    return !1
                }
            }
        })
    })(jQuery);
     
    function getSelect() {
        "" == (window.getSelection ? window.getSelection() : document.selection.createRange().text) ? layer.msg("请选择需要复制的内容！") : document.execCommand("Copy")
    }
    function baiduSearch() {
        var a = window.getSelection ? window.getSelection() : document.selection.createRange().text;
        "" == a ? layer.msg("请选择需要搜索的内容！") : window.open("https://www.baidu.com/s?wd=" + a)
    }
    function googleSearch() {
        var a = window.getSelection ? window.getSelection() : document.selection.createRange().text;
        "" == a ? layer.msg("请选择需要搜索的内容！") : window.open("https://www.google.com/search?q=" + a)
    }
    $(function() {
        for (var a = navigator.userAgent, b = "Android;iPhone;SymbianOS;Windows Phone;iPad;iPod".split(";"), d = !0, c = 0; c < b.length; c++) if (0 < a.indexOf(b[c])) {
            d = !1;
            break
        }
        d && ($.mouseMoveShow(".usercm"), $.disabledContextMenu())
    });
    </script>

@keyframes move {
0% {background-position: 0 0;}
100% {
/*宽度固定，如果为百分比背景不会滚动*/
background-position: -300px 0;
}
}
.wrap {
/*设置背景渐变色*/
background-image: linear-gradient(to right, red, orange, yellow, green, yellow, orange, red, orange,yellow, green, yellow, orange, red);
/*chrome私有样式，加前缀，文字显示背景图片*/
-webkit-background-clip: text;
animation: move 5s infinite;
/*文字颜色设为透明*/
color: transparent;
/*宽度固定*/
width: 300px;
}

<div class="wrap">Eonegh's Blog</div>

<span class="name">Name</span>
<style>
.name{   
    font-size:50px;
    background-clip: border-box;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    color: #FF512F;
    font-weight: 700;
    text-shadow: 0px 0px 7px #ffd800;
    background-image: linear-gradient(90deg, #ffd800 0%, #ff512f 100%, #fff);
    animation: glow-animation 2s infinite linear;
    color: #FFC0CB;
    box-sizing: border-box;
    vertical-align: inherit;
}
@keyframes glow-animation{
    0%{filter:hue-rotate(-360deg)}
    100%{filter:hue-rotate(360deg)}
}
</style>

.navbar-brand{position:relative;overflow:hidden;margin: 0px 0 0 0px;}.navbar-brand:before{content:""; position: absolute; left: -665px; top: -460px; width: 200px; height: 15px; background-color: rgba(255,255,255,.5); -webkit-transform: rotate(-45deg); -moz-transform: rotate(-45deg); -ms-transform: rotate(-45deg); -o-transform: rotate(-45deg); transform: rotate(-45deg); -webkit-animation: searchLights 6s ease-in 0s infinite; -o-animation: searchLights 6s ease-in 0s infinite; animation: searchLights 6s ease-in 0s infinite;}@-moz-keyframes searchLights{50%{left: -100px; top: 0;} 65%{left: 120px; top: 100px;}}@keyframes searchLights{40%{left: -100px; top: 0;} 60%{left: 120px; top: 100px;} 80%{left: -100px; top: 0px;}}

    ::-webkit-scrollbar {
      width: 10px;  
      height: 1px;
    }
    ::-webkit-scrollbar-thumb {
      background-color: #12b7f5;
      background-image: -webkit-linear-gradient(45deg, rgba(255, 93, 143, 1) 25%, transparent 25%, transparent 50%, rgba(255, 93, 143, 1) 50%, rgba(255, 93, 143, 1) 75%, transparent 75%, transparent);
    }
    ::-webkit-scrollbar-track {
        -webkit-box-shadow: inset 0 0 5px rgba(0,0,0,0.2);
        background: #f6f6f6;
    }