correction

.idea/workspace.xml

@@ -6,7 +6,6 @@
   <component name="ChangeListManager">
     <list default="true" id="0d4e44dc-11e8-4d37-b8e5-1f58496791d5" name="Changes" comment="">
       <change beforePath="$PROJECT_DIR$/css/style.css" beforeDir="false" afterPath="$PROJECT_DIR$/css/style.css" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/index.html" beforeDir="false" afterPath="$PROJECT_DIR$/index.html" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />

css/style.css

@@ -150,28 +150,16 @@ section {
     display: none;
 }
 
+section:not(:target) {
+    display: none;
+}
+
 section h2 {
     margin-bottom: 10px;
     font-weight: bold;
 }
 
-#a-propos {
-    display: block;
-}
-
-#a-propos {
-    margin: 20px;
-}
-
-#a-propos:target {
-    display: block;
-}
-
-#mesProjets:target {
-    display: block;
-}
-
-#cv:target {
+section:target {
     display: block;
 }