diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 1df4a3b..b98e0aa 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -1,14 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ChangeListManager">
-    <list default="true" id="5022b617-d045-4c00-9e44-77877d4e36e1" name="Default Changelist" comment="">
-      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/css/common.css" beforeDir="false" afterPath="$PROJECT_DIR$/css/common.css" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/css/index.css" beforeDir="false" afterPath="$PROJECT_DIR$/css/index.css" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/images/laptop1.png" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/images/new-media.png" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/index.html" beforeDir="false" afterPath="$PROJECT_DIR$/index.html" afterDir="false" />
-    </list>
+    <list default="true" id="5022b617-d045-4c00-9e44-77877d4e36e1" name="Default Changelist" comment="" />
     <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -98,7 +91,7 @@
       <workItem from="1576717839947" duration="14115000" />
       <workItem from="1576739116348" duration="9951000" />
       <workItem from="1576805766727" duration="23170000" />
-      <workItem from="1577063104211" duration="6061000" />
+      <workItem from="1577063104211" duration="6313000" />
     </task>
     <task id="LOCAL-00001" summary="官网1.0">
       <created>1574907211978</created>
@@ -198,7 +191,14 @@
       <option name="project" value="LOCAL" />
       <updated>1576823820849</updated>
     </task>
-    <option name="localTasksCounter" value="15" />
+    <task id="LOCAL-00015" summary="添加首页内容">
+      <created>1577069923391</created>
+      <option name="number" value="00015" />
+      <option name="presentableId" value="LOCAL-00015" />
+      <option name="project" value="LOCAL" />
+      <updated>1577069923391</updated>
+    </task>
+    <option name="localTasksCounter" value="16" />
     <servers />
   </component>
   <component name="TypeScriptGeneratedFilesManager">
diff --git a/images/bg1.jpg b/images/bg1.jpg
new file mode 100644
index 0000000..98856e2
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diff --git a/images/bg2.jpg b/images/bg2.jpg
new file mode 100644
index 0000000..9687e15
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diff --git a/images/step2-img1.png b/images/step2-img1.png
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index 0000000..c9f02ec
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diff --git a/images/step2-img2.png b/images/step2-img2.png
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index 0000000..e1f9a03
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diff --git a/images/step2-img3.png b/images/step2-img3.png
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index 0000000..ece431d
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diff --git a/images/step2-img4.png b/images/step2-img4.png
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index 0000000..ffbaf3d
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diff --git a/images/step2-img5.png b/images/step2-img5.png
new file mode 100644
index 0000000..380cc68
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