Markdown theme modification

1. Bold font color modification
   strong, {B
   Color: # 111111;
   }
2. Italics color modification
   EM, I {
   Color: # 111111;
   }
3. Highlight font changes the background color
   #write Mark {
   background-Color: # 111111;
   }
4. Strikethrough font color modification
   #write del {
   Color: # 111111;
   }
5. Underlined font color modification
   #write {U
   Color: # 111111;
   }
6. Text alignment ends
   text-align = left: The justify;
   text-The justify: Inter-ideograph;
7. First line indent
   text-indent: 2em;