diff --git a/InstructorsAndTrainees/instructors/dialogauthorizationinstructor.cpp b/InstructorsAndTrainees/instructors/dialogauthorizationinstructor.cpp
index bbc1717..bde6f50 100644
--- a/InstructorsAndTrainees/instructors/dialogauthorizationinstructor.cpp
+++ b/InstructorsAndTrainees/instructors/dialogauthorizationinstructor.cpp
@@ -17,3 +17,8 @@ DialogAuthorizationInstructor::~DialogAuthorizationInstructor()
 {
     delete ui;
 }
+
+void DialogAuthorizationInstructor::on_btnOK_clicked()
+{
+    this->accept();
+}
diff --git a/InstructorsAndTrainees/instructors/dialogauthorizationinstructor.h b/InstructorsAndTrainees/instructors/dialogauthorizationinstructor.h
index d0fd2a1..b11ef3e 100644
--- a/InstructorsAndTrainees/instructors/dialogauthorizationinstructor.h
+++ b/InstructorsAndTrainees/instructors/dialogauthorizationinstructor.h
@@ -16,6 +16,7 @@ public:
     explicit DialogAuthorizationInstructor(QWidget *parent = nullptr);
     ~DialogAuthorizationInstructor();
 
+public:
     QString getLogin()
     {
         return ui->editLogin->text();
@@ -26,6 +27,9 @@ public:
         return ui->editPassword->text();
     }
 
+private slots:
+    void on_btnOK_clicked();
+
 private:
     Ui::DialogAuthorizationInstructor *ui;
 };
diff --git a/InstructorsAndTrainees/instructors/dialogauthorizationinstructor.ui b/InstructorsAndTrainees/instructors/dialogauthorizationinstructor.ui
index c3b4e91..d02d667 100644
--- a/InstructorsAndTrainees/instructors/dialogauthorizationinstructor.ui
+++ b/InstructorsAndTrainees/instructors/dialogauthorizationinstructor.ui
@@ -87,22 +87,34 @@
       </layout>
      </item>
      <item>
-      <widget class="QDialogButtonBox" name="buttonBox">
-       <property name="font">
-        <font>
-         <pointsize>10</pointsize>
-        </font>
-       </property>
-       <property name="locale">
-        <locale language="English" country="UnitedStates"/>
-       </property>
+      <spacer name="verticalSpacer">
        <property name="orientation">
-        <enum>Qt::Horizontal</enum>
+        <enum>Qt::Vertical</enum>
        </property>
-       <property name="standardButtons">
-        <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
+       <property name="sizeHint" stdset="0">
+        <size>
+         <width>20</width>
+         <height>40</height>
+        </size>
        </property>
-      </widget>
+      </spacer>
+     </item>
+     <item>
+      <layout class="QHBoxLayout" name="horizontalLayout_2">
+       <item>
+        <widget class="QPushButton" name="btnOK">
+         <property name="sizePolicy">
+          <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+           <horstretch>0</horstretch>
+           <verstretch>0</verstretch>
+          </sizepolicy>
+         </property>
+         <property name="text">
+          <string>Login in</string>
+         </property>
+        </widget>
+       </item>
+      </layout>
      </item>
     </layout>
    </item>
@@ -111,38 +123,5 @@
  <resources>
   <include location="../resources.qrc"/>
  </resources>
- <connections>
-  <connection>
-   <sender>buttonBox</sender>
-   <signal>accepted()</signal>
-   <receiver>DialogAuthorizationInstructor</receiver>
-   <slot>accept()</slot>
-   <hints>
-    <hint type="sourcelabel">
-     <x>248</x>
-     <y>254</y>
-    </hint>
-    <hint type="destinationlabel">
-     <x>157</x>
-     <y>274</y>
-    </hint>
-   </hints>
-  </connection>
-  <connection>
-   <sender>buttonBox</sender>
-   <signal>rejected()</signal>
-   <receiver>DialogAuthorizationInstructor</receiver>
-   <slot>reject()</slot>
-   <hints>
-    <hint type="sourcelabel">
-     <x>316</x>
-     <y>260</y>
-    </hint>
-    <hint type="destinationlabel">
-     <x>286</x>
-     <y>274</y>
-    </hint>
-   </hints>
-  </connection>
- </connections>
+ <connections/>
 </ui>
diff --git a/InstructorsAndTrainees/instructorsandtraineeswidget.cpp b/InstructorsAndTrainees/instructorsandtraineeswidget.cpp
index 71bccac..96efabe 100644
--- a/InstructorsAndTrainees/instructorsandtraineeswidget.cpp
+++ b/InstructorsAndTrainees/instructorsandtraineeswidget.cpp
@@ -289,6 +289,7 @@ bool InstructorsAndTraineesWidget::authorizationInstructorDialog(QWidget* parent
     DialogAuthorizationInstructor dlg(parent);
     dlg.setWindowTitle(tr("Instructor authorization"));
     dlg.setWindowFlags(dlg.windowFlags() & ~Qt::WindowContextHelpButtonHint);
+    dlg.setStyleSheet(this->styleSheet());
 
     do
     {