use class selecter

src/client/styles/scss/_create-page.scss

@@ -51,7 +51,7 @@
         margin-left: 5px;
       }
 
-      #create-page-name-input, #rename-page-name-input, #duplicate-page-name-input {
+      .page-name-input {
         flex: 1;
         input {
           min-width: 300px; // Workaround to display placeholder.

src/server/views/modal/create_page.html

@@ -32,7 +32,7 @@
             <div class="d-flex create-page-input-container">
               <div class="create-page-input-row d-flex align-items-center">
                 {% if searchConfigured() %}
-                <div id="create-page-name-input"></div>
+                <div id="create-page-name-input" class="page-name-input"></div>
                 {% else %}
                 <input type="text" value="{{ parentPath(path) }}" class="page-name-input form-control " placeholder="{{ t('Input page name') }}" required />
                 {% endif %}

src/server/views/modal/duplicate.html

@@ -18,7 +18,7 @@
               <div class="input-group">
                 <span class="input-group-addon">{{ baseUrl }}</span>
                 {% if searchConfigured() %}
-                <div id="duplicate-page-name-input"></div>
+                <div id="duplicate-page-name-input" class="page-name-input"></div>
                 {% else %}
                 <input type="text" class="form-control" name="new_path" id="duplicatePageName" value="{{ page.path }}">
                 {% endif %}

src/server/views/modal/rename.html

@@ -19,7 +19,7 @@
               <span class="input-group-addon">{{ config.crowi['app:siteUrl:fixed'] }}</span>
               <span class="input-group-addon">{{ baseUrl }}</span>
               {% if searchConfigured() %}
-              <div id="rename-page-name-input"></div>
+              <div id="rename-page-name-input" class="page-name-input"></div>
               {% else %}
               <span class="input-group-addon">{{ baseUrl }}</span>
               <input type="text" class="form-control" name="new_path" id="newPageName" value="{{ page.path }}">