diff --git a/.vscode/tasks.json b/.vscode/tasks.json
new file mode 100644
index 0000000..6a85229
--- /dev/null
+++ b/.vscode/tasks.json
@@ -0,0 +1,28 @@
+{
+    "tasks": [
+        {
+            "type": "cppbuild",
+            "label": "C/C++: g++.exe build active file",
+            "command": "C:\\MinGW\\bin\\g++.exe",
+            "args": [
+                "-fdiagnostics-color=always",
+                "-g",
+                "${file}",
+                "-o",
+                "${fileDirname}\\${fileBasenameNoExtension}.exe"
+            ],
+            "options": {
+                "cwd": "${fileDirname}"
+            },
+            "problemMatcher": [
+                "$gcc"
+            ],
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            },
+            "detail": "Task generated by Debugger."
+        }
+    ],
+    "version": "2.0.0"
+}
\ No newline at end of file
diff --git a/C++/a.exe b/C++/a.exe
new file mode 100644
index 0000000..00c4979
Binary files /dev/null and b/C++/a.exe differ
diff --git a/C++/s1.cpp b/C++/s1.cpp
index 95629da..ff6dba0 100644
--- a/C++/s1.cpp
+++ b/C++/s1.cpp
@@ -6,7 +6,7 @@ using namespace std;
 int reverse(int x) {
     long r=0;                                  
     while(x){
-        r=r*10+x/10;
+        r=r*10+x%10;
         x=x/10;                                   
     }
     return r;
@@ -14,4 +14,4 @@ int reverse(int x) {
 
 int main(void){
     cout << reverse(12345) << endl;
-}
+}
\ No newline at end of file
diff --git a/C++/s2.cpp b/C++/s2.cpp
index d995ee5..9dd7b18 100644
--- a/C++/s2.cpp
+++ b/C++/s2.cpp
@@ -12,7 +12,7 @@ int main(){
     for(int i=0; i < myVec.size(); i++){
         std :: cout << myVec[i] << std :: endl;
     }
-    std :: cout << "Element at index 3: "<< myVec.at(3) << std::endl;
+    std :: cout << "Element at index 3: "<< myVec.at(2) << std::endl;
     
     return 0;
 }
diff --git a/C++/s4.cpp b/C++/s4.cpp
index 727e620..4829b99 100644
--- a/C++/s4.cpp
+++ b/C++/s4.cpp
@@ -4,7 +4,7 @@
 #include<iostream>
 #include <bits/stdc++.h>
 using namespace std;
-#define Random(n)  random()%n
+#define Random(n) random()%n
 
 int random(){
     srand(time(0));
diff --git a/C++/s5.cpp b/C++/s5.cpp
index 3c05697..11c3b9b 100644
--- a/C++/s5.cpp
+++ b/C++/s5.cpp
@@ -4,7 +4,7 @@ using namespace std;
 
 int main(void){
     string string1 = "Hello";
-    string string2 = "Horld";
+    string string2 = "HellO";
 
     if (string1 == string2)
     cout << "Equal";
diff --git a/C++/s5.exe b/C++/s5.exe
new file mode 100644
index 0000000..76eb155
Binary files /dev/null and b/C++/s5.exe differ
diff --git a/C++/s6.cpp b/C++/s6.cpp
index 736760a..30bb47e 100644
--- a/C++/s6.cpp
+++ b/C++/s6.cpp
@@ -1,5 +1,6 @@
 // to find the largest sum of subarray
 #include<iostream>
+#include<limits.h>
 using namespace std;
 
 int maxSubArraySum(int a[], int size)
@@ -15,4 +16,4 @@ int maxSubArraySum(int a[], int size)
             max_ending_here = max_so_far;
     }
     return max_so_far;
-}
+}
\ No newline at end of file
diff --git a/Web-Dev/css-is-awesome/initial.css b/Web-Dev/css-is-awesome/initial.css
index 3bf343a..dd41264 100644
--- a/Web-Dev/css-is-awesome/initial.css
+++ b/Web-Dev/css-is-awesome/initial.css
@@ -7,8 +7,8 @@ body {
 
 .container {
     background: white;
-    width: 120px;
-    height: 200px;
+    width:auto;
+    height: auto;
     padding-inline: 0.3rem;
     font-size: 3rem;
     border-radius: 0.3rem;
diff --git a/Web-Dev/flex-even-columns/initial.css b/Web-Dev/flex-even-columns/initial.css
index 2e6d07a..d0c9737 100644
--- a/Web-Dev/flex-even-columns/initial.css
+++ b/Web-Dev/flex-even-columns/initial.css
@@ -31,6 +31,7 @@ section>p {
 .flex-even-columns {
     display: flex;
     gap: 2rem;
+    justify-content: space-between;
 }
 
 .flex-even-columns>* {
diff --git a/Web-Dev/pseudo-elements/initial.css b/Web-Dev/pseudo-elements/initial.css
index 59daeed..f002c9e 100644
--- a/Web-Dev/pseudo-elements/initial.css
+++ b/Web-Dev/pseudo-elements/initial.css
@@ -139,8 +139,9 @@ nav {
     transition: ease-in-out 200ms;
 }
 
-.nav-link:hover::after {
+.nav-link:hover {
     width: 100%;
+    text-decoration: underline;
 }