refactor: refactor css

source/css/_partial/article.styl

@@ -18,7 +18,6 @@
   transition: 0.3s
 
 .article-meta
-  clearfix()
   display: flex
   flex-direction: column
   padding: article-padding article-padding + 15px 0
@@ -37,7 +36,6 @@ $article-meta-tag
 
 .article-date
   display: flex
-  align-items: center
 
 .article-date-link
   @extend $article-meta-tag
@@ -48,7 +46,6 @@ $article-meta-tag
 .article-category
   display: flex
   flex-wrap: wrap
-  align-items: center
 
 .article-category-link
   @extend $article-meta-tag
@@ -57,17 +54,6 @@ $article-meta-tag
     font-weight: 700
     margin-right: 10px
 
-.article-title
-  text-decoration: none
-  font-size: 2em
-  font-weight: bold
-  color: var(--color-default)
-  line-height: line-height-title
-  transition: color 0.2s
-
-  a&:hover
-    color: var(--color-link)
-
 .article-entry
   @extend $base-style
   clearfix()
@@ -276,7 +262,6 @@ $article-meta-tag
   padding: 10px 18px
 
 #article-nav
-  clearfix()
   margin-top: 10px
   display: flex
   flex-direction: column
@@ -327,7 +312,6 @@ $article-meta-tag
 .article-nav-caption
   text-transform: uppercase
   letter-spacing: 2px
-  line-height: 0.85em
   font-weight: bold
 
 .article-nav-title

source/css/_partial/sidebar.styl

@@ -21,7 +21,6 @@
   flex-direction: column
   justify-content: center
   align-items: center
-  box-shadow: unset
   transition: .3s
 
   .hidden
@@ -43,7 +42,6 @@
   display: flex
   flex-shrink: 0
   flex-direction: column
-  justify-content: center
   align-items: center
 
   img
@@ -77,7 +75,6 @@ $sidebar-state-content
   flex-direction: column
   flex-shrink: 0
   align-items: center
-  justify-content: center
   padding: 0 20px
 
   div
@@ -113,7 +110,6 @@ $sidebar-state-content
   display: flex
   flex-shrink: 0
   justify-content: center
-  align-items: center
   width: 70%
   flex-wrap: wrap
 
@@ -267,7 +263,6 @@ $menu-link
   border: 10px var(--color-wrap) double
   box-shadow: 0 0 10px 3px rgba(255, 0, 0, .3)
   opacity: 0.8
-  transition: border opacity 0.5s
 
   &:hover
     opacity: 1
@@ -291,7 +286,6 @@ $menu-link
   font-family: font-icon
   box-shadow: 1px 2px 10px rgba(0, 0, 0, .2)
   z-index: 999
-  transition: .3s
 
   img
     transition: .3s