I want the center of the dropdown menu aligns with the center of the parent menu item. Using css (stylus). But the width of the dropdown menu is not fixed, the width of the submenu items is dynamic, meaning it can change based on the content inside.

This article is the detail of how to setup AWS s3 on my Java 1.x with Spring Boot based on my own project needs.

Note about how to realize a IOC.

Note of learning Ioc Introduction.

This is a note of studying Spring.

之前装过win11，笔记本没问题，去教室电脑装了一下，各种不支持，CPU和TPM都不支持。但是并不是真的是硬件不支持，可以跳过检测。

昨天刚刚装了win11，又遇到了那个经典的bug，没有声音，声音图标显示一个叉号。这个之前在Win10我就遇见过好多回了，每次都搞好长时间。

I’v been wanting to optimize my blog’s loading speed for a long time. However, even when I rewrote my theme, I still didn’t do it.

Recently, while trying to accelerate my blog load speed, I also want to get all my pictures a cdn. Also I’m tired of uploading the picture every time I want to quote a picture in my post, So I found a softeware PicGo.

This problem derives from Heap Sort.

主题重构Day1-2，详细地写一些搭建环境和框架遇到的bug，以己如何解决方法。详细记录了一些开发时的心理状态作为日后的乐趣。

Hexo-theme-last是去年开发的了，但是一直没有完成 ，而且是处于什么也不会的基础上。所以…

她开始了做梦，奇奇怪怪，画面扭曲的梦。

梦境的终点是一扇门，推开它，进入下一个梦境，宣告死亡后也仍未结束。

我站在对面的街角，看着人来人往的人群。

那么多的面孔，各自相遇，各自擦身，带着匆匆的脚步。

人海茫茫。

我可以遇到很多的人，但为什么偏偏是他？

从我出生的那刻起他就驻留在了我的生命，牢牢扎根，从未移动。有时候我会觉得很痛，因为我已经为他所牵扯缠绕，从缘分到命运。我笑着接受这份爱，却哭着拥有了它，不是后悔，只是太过沉重，沉重到无法呼吸。

“你就是那只遗失掉的小熊……代替它保护我，甚至代替爸爸疼爱我，哥哥……要是没有你的话，我早已经不在了。” “不在了……” 或许还活着，但一定被推进了无尽的深渊，少了他的那片温暖，她早就被扔在无人问津的一角，然后慢慢结成了冰，永不融化的冰。

Environment: When you set float to an element, and it’s parent’s width or height follows the element’s width or height. Then, the parent will lose its width or height and it’s called height crash. Here are some solutions.

Some of the basic rules of CSS and also a learning and reviewing Records of CSS.

The pre-knowledges you should know is priority of operator. Priority is the rule that determines when we meet two operators, which to calculate first. Like 3+2*5, we calculate 2 * 5 first.

The priority of operators are:

Last time I‘ve talked about how to build your own blog, however, the original theme might not very beautiful to you. So this time I would write how to change your blog theme and others.

This is a homework of Discrete Math course and it happened a long time ago. At first, I think of a violent way that is to list all the possible situations. Somehow, I still can’t achieve this because of my confusing logic. Then a friend of mine told me an algorithm that is Shunting Yard Algorithm.