1, the new document.
2, click on bottom right corner of the document formats: plain text, pop-up box above the input HTML document into html format.
3, enter "!", Press tab.
4, complete.
1, the new document.
2, click on bottom right corner of the document formats: plain text, pop-up box above the input HTML document into html format.
3, enter "!", Press tab.
4, complete.