modify: fix style for storage item

browser/main/SideNav/StorageItem.styl

@@ -1,10 +1,12 @@
 .root
   width 100%
   user-select none
+
 .header
   position relative
   height 26px
   width 100%
+  margin-bottom 5px
   transition 0.15s
   &:hover
     background-color $ui-button--hover-backgroundColor
@@ -45,7 +47,7 @@
 .header-info
   display block
   width 100%
-  height 26px
+  height 30px
   padding-left 25px
   padding-right 10px
   line-height 26px
@@ -85,7 +87,7 @@
   background-color transparent
   color $ui-inactive-text-color
   padding 0
-  margin-bottom 2px
+  margin-bottom 5px
   text-align left
   border none
   overflow ellipsis
@@ -112,7 +114,7 @@
   padding 0 10px
   height 26px
   line-height 26px
-  border-width 0 0 0 6px
+  border-width 0 0 0 3px
   border-style solid
   border-color transparent