diff --git a/client/src/components/QuestionsDisplay/MultipleChoiceQuestionDisplay/MultipleChoiceQuestionDisplay.tsx b/client/src/components/QuestionsDisplay/MultipleChoiceQuestionDisplay/MultipleChoiceQuestionDisplay.tsx
index 1a3152d..fffae6c 100644
--- a/client/src/components/QuestionsDisplay/MultipleChoiceQuestionDisplay/MultipleChoiceQuestionDisplay.tsx
+++ b/client/src/components/QuestionsDisplay/MultipleChoiceQuestionDisplay/MultipleChoiceQuestionDisplay.tsx
@@ -35,7 +35,7 @@ const MultipleChoiceQuestionDisplay: React.FC<Props> = (props) => {
     }, [answer]);
 
     const checkAnswer = () => {
-        const isCorrect = question.choices.some((choice) => choice.formattedText.text === answer as string);
+        const isCorrect = question.choices.some((choice) => choice.isCorrect && choice.formattedText.text === answer as string);
         setisGoodAnswer(isCorrect);
     };
 
@@ -97,7 +97,7 @@ const MultipleChoiceQuestionDisplay: React.FC<Props> = (props) => {
             )}
 
             {!showAnswer && handleOnSubmitAnswer && (
-
+                <div className="submit-button-container">
                 <Button
                 className='submit-button'
                 variant="contained"
@@ -109,6 +109,7 @@ const MultipleChoiceQuestionDisplay: React.FC<Props> = (props) => {
                     Répondre
 
                 </Button>
+                </div>
             )}
         </div>
     );
diff --git a/client/src/components/QuestionsDisplay/NumericalQuestionDisplay/NumericalQuestionDisplay.tsx b/client/src/components/QuestionsDisplay/NumericalQuestionDisplay/NumericalQuestionDisplay.tsx
index d9026cf..b6fc138 100644
--- a/client/src/components/QuestionsDisplay/NumericalQuestionDisplay/NumericalQuestionDisplay.tsx
+++ b/client/src/components/QuestionsDisplay/NumericalQuestionDisplay/NumericalQuestionDisplay.tsx
@@ -108,6 +108,7 @@ const NumericalQuestionDisplay: React.FC<Props> = (props) => {
                         </div>
                     )}
                     {handleOnSubmitAnswer && (
+                    <div className="submit-button-container">
                         <Button
                         className='submit-button'
                             variant="contained"
@@ -120,6 +121,7 @@ const NumericalQuestionDisplay: React.FC<Props> = (props) => {
                         >
                             Répondre
                         </Button>
+                        </div>
                     )}
                 </>
             )}
diff --git a/client/src/components/QuestionsDisplay/ShortAnswerQuestionDisplay/ShortAnswerQuestionDisplay.tsx b/client/src/components/QuestionsDisplay/ShortAnswerQuestionDisplay/ShortAnswerQuestionDisplay.tsx
index fd49835..d03720c 100644
--- a/client/src/components/QuestionsDisplay/ShortAnswerQuestionDisplay/ShortAnswerQuestionDisplay.tsx
+++ b/client/src/components/QuestionsDisplay/ShortAnswerQuestionDisplay/ShortAnswerQuestionDisplay.tsx
@@ -90,6 +90,7 @@ const ShortAnswerQuestionDisplay: React.FC<Props> = (props) => {
                         />
                     </div>
                     {handleOnSubmitAnswer && (
+                    <div className="submit-button-container">
                         <Button
                         className='submit-button'   
                             variant="contained"
@@ -102,6 +103,7 @@ const ShortAnswerQuestionDisplay: React.FC<Props> = (props) => {
                         >
                             Répondre
                         </Button>
+                        </div>
                     )}
                 </>
             )}
diff --git a/client/src/components/QuestionsDisplay/TrueFalseQuestionDisplay/TrueFalseQuestionDisplay.tsx b/client/src/components/QuestionsDisplay/TrueFalseQuestionDisplay/TrueFalseQuestionDisplay.tsx
index a8d4acf..808185b 100644
--- a/client/src/components/QuestionsDisplay/TrueFalseQuestionDisplay/TrueFalseQuestionDisplay.tsx
+++ b/client/src/components/QuestionsDisplay/TrueFalseQuestionDisplay/TrueFalseQuestionDisplay.tsx
@@ -51,7 +51,7 @@ const TrueFalseQuestionDisplay: React.FC<Props> = (props) => {
              {showAnswer && (
                 <div>
                     <div className='question-feedback-validation'>
-                        {question.isTrue? '✅ Correct! ' : '❌ Incorrect!'}
+                        {answer === question.isTrue ? '✅ Correct! ' : '❌ Incorrect!'}
                     </div>
                     <div className="question-title">
                         Question :
@@ -104,6 +104,7 @@ const TrueFalseQuestionDisplay: React.FC<Props> = (props) => {
                 </div>
             )}
             {!showAnswer && handleOnSubmitAnswer && (
+            <div className="submit-button-container">
                 <Button
                 className='submit-button'
                     variant="contained"
@@ -115,6 +116,7 @@ const TrueFalseQuestionDisplay: React.FC<Props> = (props) => {
                 >
                     Répondre
                 </Button>
+                </div>
             )}
         </div>
     );
diff --git a/client/src/components/QuestionsDisplay/questionStyle.css b/client/src/components/QuestionsDisplay/questionStyle.css
index ddd6416..328c1ed 100644
--- a/client/src/components/QuestionsDisplay/questionStyle.css
+++ b/client/src/components/QuestionsDisplay/questionStyle.css
@@ -214,3 +214,8 @@
     width: min-content;
     margin-left: 19rem;}
 
+.submit-button-container{
+    display: flex;
+    justify-content: center;
+    margin-top: 1rem;
+}
\ No newline at end of file