diff --git a/experiment/simulation/.DS_Store b/experiment/simulation/.DS_Store
deleted file mode 100644
index 7ae1ca6..0000000
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diff --git a/experiment/simulation/A.html b/experiment/simulation/A.html
index 31ca66b..b809347 100644
--- a/experiment/simulation/A.html
+++ b/experiment/simulation/A.html
@@ -40,15 +40,15 @@ <h1 class="rules">Rules-</h1>
                 <div class="dot" id="dot1" style="top: 315px; left: 97px;"></div>   <!-- dot3 -->
                 <div class="dot" id="dot2" style="top: 315px; left: 305px;"></div>  <!-- dot5 -->
                 <div class="dot" id="dot5" style="top: 212px; left: 258px;"></div> <!-- dot4 -->
-                <img id="sbox" src="/experiment/simulation/Letters/A/sboxx.png" >
-                <img id="trace" src="/experiment/simulation/Letters/A/AA.png" >
-             <img class="arrrow1" id="arrow1" src="/experiment/simulation/Letters/A/without-bg.gif" alt="Overlay Image"> 
-              <img class="arrrow2" id="arrow2" src="/experiment/simulation/Letters/A/without-bg.gif" alt="Overlay Image"> 
-               <img class="arrrow3" id="arrow3" src="/experiment/simulation/Letters/A/without-bg.gif" alt="Overlay Image"> 
+                <img id="sbox" src="/experiment/simulation/images/Letters/A/sboxx.png" >
+                <img id="trace" src="/experiment/simulation/images/Letters/A/AA.png" >
+             <img class="arrrow1" id="arrow1" src="/experiment/simulation/images/Letters/A/without-bg.gif" alt="Overlay Image"> 
+              <img class="arrrow2" id="arrow2" src="/experiment/simulation/images/Letters/A/without-bg.gif" alt="Overlay Image"> 
+               <img class="arrrow3" id="arrow3" src="/experiment/simulation/images/Letters/A/without-bg.gif" alt="Overlay Image"> 
               
-                <img id="stroke1" src="/experiment/simulation/Letters/A/stroke1.png" >
-                <img id="stroke2" src="/experiment/simulation/Letters/A/stroke1.png" >
-                <img id="stroke3" src="/experiment/simulation/Letters/A/stroke1.png" >
+                <img id="stroke1" src="/experiment/simulation/images/Letters/A/stroke1.png" >
+                <img id="stroke2" src="/experiment/simulation/images/Letters/A/stroke1.png" >
+                <img id="stroke3" src="/experiment/simulation/images/Letters/A/stroke1.png" >
                 
             </div>
 
diff --git a/experiment/simulation/Letters/.DS_Store b/experiment/simulation/Letters/.DS_Store
deleted file mode 100644
index 2196823..0000000
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diff --git a/experiment/simulation/Letters/A/A.css b/experiment/simulation/Letters/A/A.css
index b31cd0a..85aacc2 100644
--- a/experiment/simulation/Letters/A/A.css
+++ b/experiment/simulation/Letters/A/A.css
@@ -212,9 +212,8 @@ body {
 .next-exp {
     position: absolute;
     display: none;
-    left: 75%;
+    left: 70%;
     transform: translateX(-50%); /* Centering button horizontally */
-    bottom: 20px; /* Position from the bottom */
     padding: 10px 15px;
     color: white;
     background-color: rgb(20, 117, 228);
@@ -222,7 +221,5 @@ body {
     border: none;
     border-radius: 4px;
     cursor: pointer;
-
-
-   bottom: 90px;
+    bottom: 150px;
 }
diff --git a/experiment/simulation/Letters/B/.DS_Store b/experiment/simulation/Letters/B/.DS_Store
deleted file mode 100644
index 945a6c0..0000000
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diff --git a/experiment/simulation/images/.DS_Store b/experiment/simulation/images/.DS_Store
deleted file mode 100644
index 9a36163..0000000
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diff --git a/experiment/simulation/images/Letters/A/A.png b/experiment/simulation/images/Letters/A/A.png
new file mode 100644
index 0000000..332fd2c
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diff --git a/experiment/simulation/images/Letters/A/AA.png b/experiment/simulation/images/Letters/A/AA.png
new file mode 100644
index 0000000..804c864
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diff --git a/experiment/simulation/images/Letters/A/arrow_down.gif b/experiment/simulation/images/Letters/A/arrow_down.gif
new file mode 100644
index 0000000..b8f3a52
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diff --git a/experiment/simulation/images/Letters/A/cursor.cur b/experiment/simulation/images/Letters/A/cursor.cur
new file mode 100644
index 0000000..2ffd42c
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diff --git a/experiment/simulation/images/Letters/A/sboxx.png b/experiment/simulation/images/Letters/A/sboxx.png
new file mode 100644
index 0000000..bc30ae9
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diff --git a/experiment/simulation/images/Letters/A/stroke1.png b/experiment/simulation/images/Letters/A/stroke1.png
new file mode 100644
index 0000000..3f06a3c
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diff --git a/experiment/simulation/images/Letters/A/without-bg.gif b/experiment/simulation/images/Letters/A/without-bg.gif
new file mode 100644
index 0000000..455420f
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diff --git a/experiment/simulation/images/MainpageImages/.DS_Store b/experiment/simulation/images/MainpageImages/.DS_Store
deleted file mode 100644
index 0383579..0000000
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diff --git a/experiment/simulation/images/UC-LC-letters/.DS_Store b/experiment/simulation/images/UC-LC-letters/.DS_Store
deleted file mode 100644
index 8fecebe..0000000
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