diff --git a/test.html b/test.html
index f95d602..9762699 100644
--- a/test.html
+++ b/test.html
@@ -22,6 +22,7 @@
 
         <div id="appsAccordionContainer">
             <div class="accordion" id="appsAccordion">
+                <!-- Android -->
                 <div class="accordion-item" data-os="Android">
                     <h2 class="accordion-header" id="headingAndroid">
                         <button class="accordion-button" type="button" data-bs-toggle="collapse" data-bs-target="#collapseAndroid" aria-expanded="true" aria-controls="collapseAndroid">
@@ -30,11 +31,37 @@
                     </h2>
                     <div id="collapseAndroid" class="accordion-collapse collapse" aria-labelledby="headingAndroid" data-bs-parent="#appsAccordion">
                         <div class="accordion-body">
-                            <p>Описание приложений для Android.</p>
+                            <div class="accordion" id="androidSubAccordion">
+                                <div class="accordion-item">
+                                    <h2 class="accordion-header" id="headingAndroidApp1">
+                                        <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseAndroidApp1" aria-expanded="false" aria-controls="collapseAndroidApp1">
+                                            Приложение 1
+                                        </button>
+                                    </h2>
+                                    <div id="collapseAndroidApp1" class="accordion-collapse collapse" aria-labelledby="headingAndroidApp1" data-bs-parent="#androidSubAccordion">
+                                        <div class="accordion-body">
+                                            <p>Описание приложения 1 для Android.</p>
+                                        </div>
+                                    </div>
+                                </div>
+                                <div class="accordion-item">
+                                    <h2 class="accordion-header" id="headingAndroidApp2">
+                                        <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseAndroidApp2" aria-expanded="false" aria-controls="collapseAndroidApp2">
+                                            Приложение 2
+                                        </button>
+                                    </h2>
+                                    <div id="collapseAndroidApp2" class="accordion-collapse collapse" aria-labelledby="headingAndroidApp2" data-bs-parent="#androidSubAccordion">
+                                        <div class="accordion-body">
+                                            <p>Описание приложения 2 для Android.</p>
+                                        </div>
+                                    </div>
+                                </div>
+                            </div>
                         </div>
                     </div>
                 </div>
 
+                <!-- iOS -->
                 <div class="accordion-item" data-os="iOS">
                     <h2 class="accordion-header" id="headingiOS">
                         <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseiOS" aria-expanded="false" aria-controls="collapseiOS">
@@ -43,11 +70,37 @@
                     </h2>
                     <div id="collapseiOS" class="accordion-collapse collapse" aria-labelledby="headingiOS" data-bs-parent="#appsAccordion">
                         <div class="accordion-body">
-                            <p>Описание приложений для iOS.</p>
+                            <div class="accordion" id="iosSubAccordion">
+                                <div class="accordion-item">
+                                    <h2 class="accordion-header" id="headingiOSApp1">
+                                        <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseiOSApp1" aria-expanded="false" aria-controls="collapseiOSApp1">
+                                            Приложение 1
+                                        </button>
+                                    </h2>
+                                    <div id="collapseiOSApp1" class="accordion-collapse collapse" aria-labelledby="headingiOSApp1" data-bs-parent="#iosSubAccordion">
+                                        <div class="accordion-body">
+                                            <p>Описание приложения 1 для iOS.</p>
+                                        </div>
+                                    </div>
+                                </div>
+                                <div class="accordion-item">
+                                    <h2 class="accordion-header" id="headingiOSApp2">
+                                        <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseiOSApp2" aria-expanded="false" aria-controls="collapseiOSApp2">
+                                            Приложение 2
+                                        </button>
+                                    </h2>
+                                    <div id="collapseiOSApp2" class="accordion-collapse collapse" aria-labelledby="headingiOSApp2" data-bs-parent="#iosSubAccordion">
+                                        <div class="accordion-body">
+                                            <p>Описание приложения 2 для iOS.</p>
+                                        </div>
+                                    </div>
+                                </div>
+                            </div>
                         </div>
                     </div>
                 </div>
 
+                <!-- Windows -->
                 <div class="accordion-item" data-os="Windows">
                     <h2 class="accordion-header" id="headingWindows">
                         <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseWindows" aria-expanded="false" aria-controls="collapseWindows">
@@ -56,7 +109,32 @@
                     </h2>
                     <div id="collapseWindows" class="accordion-collapse collapse" aria-labelledby="headingWindows" data-bs-parent="#appsAccordion">
                         <div class="accordion-body">
-                            <p>Описание приложений для Windows.</p>
+                            <div class="accordion" id="windowsSubAccordion">
+                                <div class="accordion-item">
+                                    <h2 class="accordion-header" id="headingWindowsApp1">
+                                        <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseWindowsApp1" aria-expanded="false" aria-controls="collapseWindowsApp1">
+                                            Приложение 1
+                                        </button>
+                                    </h2>
+                                    <div id="collapseWindowsApp1" class="accordion-collapse collapse" aria-labelledby="headingWindowsApp1" data-bs-parent="#windowsSubAccordion">
+                                        <div class="accordion-body">
+                                            <p>Описание приложения 1 для Windows.</p>
+                                        </div>
+                                    </div>
+                                </div>
+                                <div class="accordion-item">
+                                    <h2 class="accordion-header" id="headingWindowsApp2">
+                                        <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseWindowsApp2" aria-expanded="false" aria-controls="collapseWindowsApp2">
+                                            Приложение 2
+                                        </button>
+                                    </h2>
+                                    <div id="collapseWindowsApp2" class="accordion-collapse collapse" aria-labelledby="headingWindowsApp2" data-bs-parent="#windowsSubAccordion">
+                                        <div class="accordion-body">
+                                            <p>Описание приложения 2 для Windows.</p>
+                                        </div>
+                                    </div>
+                                </div>
+                            </div>
                         </div>
                     </div>
                 </div>