completed v1.1 basic-layout in v1.0 based on the main-content part of the css style to fill the v1.0 missing base.css.
currently also need to adjust the main-content part of the margins and so on, the middle of the content looks a bit confusing.
3.@Xiang Li temporarily fix the left column icon alignment function.
finished posts.html and posts.css.(last part of layout)