diff --git a/minimal/minimal-calculator-basic.html b/minimal/minimal-calculator-basic.html
index f0685a33..de712022 100644
--- a/minimal/minimal-calculator-basic.html
+++ b/minimal/minimal-calculator-basic.html
@@ -1,98 +1,78 @@
-<!-- origenal : https://codepen.io/dishabansal/pen/xypOBB -->
 <!DOCTYPE html>
 <html lang="en">
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>calculator</title>
+    <title>Calculator</title>
     <link href="https://fonts.googleapis.com/css2?family=Dosis:wght@500&family=MuseoModerno:wght@300;400&display=swap" rel="stylesheet">
 
-
     <style>
-
 body {
   margin: 0 auto;
   text-align: center;
   font-size: 23px;
-
-
 }
 
 .main {
   max-width: 10%;
 }
 
-
-
-
 .button > .over {
-  text-decoration:overline;
+  text-decoration: overline;
   display: inline-block;
-  position:relative;
+  position: relative;
   top: 3px;
   left: -4px;
 }
 
 .calculator {
-  
-    display: inline-block;
-    background: white;
-    margin: 1% 0;
-    color: black;
-    border: 3px solid #000000;
-    border-radius: 5px;
-    box-shadow: 2px 2px 1px 0px #000000;
-    max-width: 240px;
-
-  
+  display: inline-block;
+  background: white;
+  margin: 1% 0;
+  color: black;
+  border: 3px solid #000000;
+  border-radius: 5px;
+  box-shadow: 2px 2px 1px 0px #000000;
+  max-width: 240px;
 }
 
 .calculator .button {
-  
-    font-size: x-large;
-    width: 2em;
-    min-height: 2em;
-    margin: 0.8%;
-    border-radius: 15%;
-    border: 0.08em solid #000;
-    font-family: monospace;
-    background: white;
-    box-shadow: 0.03em  0.03em 0.01em 0px #000000;
-
-
+  font-size: x-large;
+  width: 2em;
+  min-height: 2em;
+  margin: 0.8%;
+  border-radius: 15%;
+  border: 0.08em solid #000;
+  font-family: monospace;
+  background: #fee8f7; /* Regular Button Color: light pink */
+  box-shadow: 0.03em  0.03em 0.01em 0px #000000;
 }
 
-.calculator .accent{
-   background: #f3fff3;  background: #f3fff3;;
+.calculator .accent {
+  background: #e2dcfe; /* Accent Button Color: light lavender */
 }
 
 .calculator .space {
-  
-    font-size: x-large;
-    width: 2.4em;
-    min-height: 2.4em;
-    margin: 0.5%;
-    border-radius: 15%;
-    border: 0.08em solid #ffffff;
-    background: white;
-
-
+  font-size: x-large;
+  width: 2.4em;
+  min-height: 2.4em;
+  margin: 0.5%;
+  border-radius: 15%;
+  border: 0.08em solid #ffffff;
+  background: white;
 }
 
-
 .calculator button:hover,
 #backspace:hover {
   background: #f3fff3;
-  color:#000000;
+  color: #000000;
   transform: scale(0.9);
   border-radius: 20%;
-
 }
 
-.calculator 
-#clear:hover , #rad:hover  ,#deg:hover{
-  background: rgb(0, 0, 0)!important;
-  color:#ffffff;
+.calculator #clear:hover, #rad:hover, #deg:hover {
+  background: rgb(0, 0, 0) !important;
+  color: #ffffff;
   transform: scale(0.9);
   border-radius: 20%;
 }
@@ -106,43 +86,40 @@
 .button:active,
 .button-active {
   background: rgb(0, 0, 0);
-  color:#ffffff;
+  color: #ffffff;
   transform: scale(0.8);
 }
 
- #screen{
-
-    border: 3px solid #000000;
-    border-radius: 5px;
-    width: 80%;
-    height: 50px;
-    margin : 5%;
-    text-align: right;
-    overflow: auto;
-    overflow-wrap: break-word;
-    font-size: 30px;
-    font-family: monospace;
-    background-color: #000;
-    color: #fff;
-
+#screen {
+  border: 3px solid #000000;
+  border-radius: 5px;
+  width: 80%;
+  height: 50px;
+  margin: 5%;
+  text-align: right;
+  overflow: auto;
+  overflow-wrap: break-word;
+  font-size: 30px;
+  font-family: monospace;
+  background-color: #000;
+  color: #fff;
 }
 
-    
 #clean {
   background: rgb(27, 27, 27);
-  color:#ffffff;
+  color: #ffffff;
 }
 #rad {
   background: rgb(27, 27, 27);
-  color:#ffffff;
+  color: #ffffff;
 }
 #deg {
   background: rgb(27, 27, 27);
-  color:#ffffff;
+  color: #ffffff;
 }
 
-.rows{
-    margin: 5%;
+.rows {
+  margin: 5%;
 }
 
 .calculator__row1,
@@ -159,103 +136,87 @@
 
 .calculator__row5 {
   margin-bottom: 3%;
-} 
+}
 
 .footer {
-
   position: absolute;
   left: 0;
   right: 0;
   bottom: 0;
 }
-
-
     </style>
 </head>
 <body>
     <link href="https://fonts.googleapis.com/css?family=Libre+Barcode+128+Text" rel="stylesheet">
-<div id="main">
-		<div class="calculator">
-		<input type="text" id="screen">
+    <div id="main">
+      <div class="calculator">
+        <input type="text" id="screen">
 
         <div class="rows">
             <div class="calculator__row1">
-
                 <button class="button accent">(</button>
                 <button class="button accent">)</button>
                 <div class="space" ></div>
                 <div class="space" ></div>
                 <button class="button" id="clean">AC</button>
             </div>
-                <div class="calculator__row2">
-
-                  <button class="button accent">x^</button>
-                       <button class="button ">7</button>
-                        <button class="button ">8</button>
-                        <button class="button ">9</button>
-                        <button class="button accent">*</button>
-                </div>
-                <div class="calculator__row3">
-               
-
-                    <button class="button accent">%</button>
-                      <button class="button ">4</button>
-                        <button class="button ">5</button>
-                        <button class="button ">6</button>
-                        <button class="button accent">/</button>
-                </div>
-                <div class="calculator__row4">
-                  <button class="button accent">&radic;<span class="over"></span></button>
-                        <button class="button ">1</button>
-                        <button class="button ">2</button>
-                        <button class="button ">3</button>
-                        <button class="button accent">-</button>
-                </div>
-                        <div class="calculator__row5">
-               
-                          <div class="space" ></div>
-                        <button class="button accent">.</button>
-                  <button class="button ">0</button>
-                        <button class="button accent">=</button>
-                        <button class="button accent">+</button>
+            <div class="calculator__row2">
+                <button class="button accent">x^</button>
+                <button class="button ">7</button>
+                <button class="button ">8</button>
+                <button class="button ">9</button>
+                <button class="button accent">*</button>
+            </div>
+            <div class="calculator__row3">
+                <button class="button accent">%</button>
+                <button class="button ">4</button>
+                <button class="button ">5</button>
+                <button class="button ">6</button>
+                <button class="button accent">/</button>
+            </div>
+            <div class="calculator__row4">
+                <button class="button accent">&radic;<span class="over"></span></button>
+                <button class="button ">1</button>
+                <button class="button ">2</button>
+                <button class="button ">3</button>
+                <button class="button accent">-</button>
+            </div>
+            <div class="calculator__row5">
+                <div class="space" ></div>
+                <button class="button accent">.</button>
+                <button class="button ">0</button>
+                <button class="button accent">=</button>
+                <button class="button accent">+</button>
             </div>
-
         </div>
-
-
-</div>
-</div>
-
-	
-		
-	
-</body>
+      </div>
+    </div>
 
 <script>
 var display = document.getElementById("screen");
 var buttons = document.getElementsByClassName("button");
-  
-  Array.prototype.forEach.call(buttons, function(button) {
+
+Array.prototype.forEach.call(buttons, function(button) {
   button.addEventListener("click", function() {
     if (button.textContent != "=" && 
-    button.textContent != "AC" && 
-    button.textContent != "*" && 
-    button.textContent != "/" && 
-    button.textContent != "√" && 
-    button.textContent != "+" && 
-    button.textContent != "%" && 
-    button.textContent != "=" && 
-    button.textContent != "-" && 
-    button.textContent != "sin" && 
-    button.textContent != "cos" && 
-    button.textContent != "tan" && 
-    button.textContent != "log" && 
-    button.textContent != "ln" && 
-    button.textContent != "x^" && 
-    button.textContent != "x!" && 
-    button.textContent != "pi" && 
-    button.textContent != "Rad" 
-    && button.textContent != "Deg") {
+        button.textContent != "AC" && 
+        button.textContent != "*" && 
+        button.textContent != "/" && 
+        button.textContent != "√" && 
+        button.textContent != "+" && 
+        button.textContent != "%" && 
+        button.textContent != "=" && 
+        button.textContent != "-" && 
+        button.textContent != "sin" && 
+        button.textContent != "cos" && 
+        button.textContent != "tan" && 
+        button.textContent != "log" && 
+        button.textContent != "ln" && 
+        button.textContent != "x^" && 
+        button.textContent != "x!" && 
+        button.textContent != "pi" && 
+        button.textContent != "Rad" 
+        && button.textContent != "Deg") {
       display.value += button.textContent;
     } else if (button.textContent === "=") {
       equals();
@@ -267,7 +228,7 @@
       divide();
     } else if (button.textContent === "+") {
       plus();
-      } else if (button.textContent === "-") {
+    } else if (button.textContent === "-") {
       Minus();
     } else if (button.textContent === "%") {
       percent();
@@ -297,23 +258,15 @@
   });
 });
 
-
-function syntaxError() {
-  if (eval(display.value) == SyntaxError || eval(display.value) == ReferenceError || eval(display.value) == TypeError) {
-    display.value == "Syntax Error";
-  }
-}
-
-
 function equals() {
   if ((display.value).indexOf("^") > -1) {
     var base = (display.value).slice(0, (display.value).indexOf("^"));
     var exponent = (display.value).slice((display.value).indexOf("^") + 1);
     display.value = eval("Math.pow(" + base + "," + exponent + ")");
   } else {
-    display.value = eval(display.value)
-    checkLength()
-    syntaxError()
+    display.value = eval(display.value);
+    checkLength();
+    syntaxError();
   }
 }
 
@@ -321,7 +274,6 @@
   display.value = "";
 }
 
-
 function multiply() {
   display.value += "*";
 }
@@ -329,6 +281,7 @@
 function divide() {
   display.value +=  "/";
 }
+
 function plus() {
   display.value +=  "+";
 }
@@ -337,71 +290,10 @@
   display.value +=  "-";
 }
 
-function factorial() {
-  var number = 1;
-  if (display.value === 0) {
-    display.value = "1";
-  } else if (display.value < 0) {
-    display.value = "undefined";
-  } else {
-    var number = 1;
-    for (var i = display.value; i > 0; i--) {
-      number *=  i;
-    }
-    display.value = number;
-  }
-}
-
-function pi() {
-  display.value = (display.value * Math.PI);
-}
-
-function square() {
-  display.value = eval(display.value * display.value);
-}
-
-function squareRoot() {
-  display.value = Math.sqrt(display.value);
-}
-
 function percent() {
   display.value = display.value / 100;
 }
 
-function sin() {
-  display.value = Math.sin(display.value);
-}
-
-	
-function cos() {
-  display.value = Math.cos(display.value);
-}
-
-function tan() {
-  display.value = Math.tan(display.value);
-}
-
-function log() {
-  display.value = Math.log10(display.value);
-}
-
-function ln() {
-  display.value = Math.log(display.value);
-}
-
-function exponent() {
-  display.value += "^";
-}
-
-
-function radians() {
-  display.value = display.value * (Math.PI / 180);
-}
-
-function degrees() {
-  display.value = display.value * (180 / Math.PI);
-}
-
-</script>
-
-</html>
\ No newline at end of file
+function pi() {
+  display.value = (display
+<!-- origenal : https://codepen.io/dishabansal/pen/xypOBB -->
