diff --git a/.local/static/2019/10/2/1574738384064.1574738384064.png b/.local/static/2019/10/2/1574738384064.1574738384064.png
new file mode 100644
index 0000000..9074809
Binary files /dev/null and b/.local/static/2019/10/2/1574738384064.1574738384064.png differ
diff --git a/css绘制三角形.md b/css绘制三角形.md
index f0882a9..e0d4b4c 100644
--- a/css绘制三角形.md
+++ b/css绘制三角形.md
@@ -22,4 +22,7 @@ html
 这样就非常明了了
 如果把宽高设为0
 ![title](.local/static/2019/10/2/1574738325016.1574738325016.png)
-如果需要保留底部 
+如果需要保留底部 将其他部位设为透明色或者背景色
+![title](.local/static/2019/10/2/1574738384064.1574738384064.png)
+留下bottom
+其他同理
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