feature：

进度条圆角样式；
侧边菜单与目录留白

components/Progress.js

@@ -25,7 +25,7 @@ const Progress = ({ targetRef }) => {
   }, [percent])
 
   return (<div className='h-1.5 fixed left-0 top-0 w-full shadow-2xl z-40'>
-        <div className='h-1 bg-blue-500 fixed left-0 top-0 duration-200' style={{ width: `${percent}%` }}/>
+        <div className='h-1 bg-blue-500 fixed left-0 top-0 duration-200 rounded' style={{ width: `${percent}%` }}/>
       </div>)
 }
 

components/SideBar.js

@@ -26,7 +26,7 @@ const SideBar = ({ tags, currentTag, post, posts, categories, currentCategory })
       <InfoCard />
     </section>
 
-    <div className={(!post ? 'sticky top-0' : '') + ' bg-white dark:bg-gray-800'}>
+    <div className={(!post ? 'sticky top-0' : '') + ' bg-white dark:bg-gray-800 pb-4'}>
 
       {/* 搜索框 */}
       <section className='p-5'>