corrected naming convention according to README

Author: kkartik07

buttons/buttons.css

@@ -1747,7 +1747,7 @@ a:focus-visible {
 /* cypherrs 2nd bt end  */
 
 /* kkartik07's 1st btn start */
-.kkartik07-1-btn {
+.kkartik07-btn-1 {
 	padding: 18px 32px;
 	font-size: 30px;
 	border: none;
@@ -1762,7 +1762,7 @@ a:focus-visible {
 	overflow: hidden;
 	box-shadow: rgba(110, 110, 119, 0.452) 0px 8px 30px 0px;
   }
-  .kkartik07-1-btn::before {
+  .kkartik07-btn-1::before {
 	width: 200%;
 	height: 200%;
 	content: "";
@@ -1773,7 +1773,7 @@ a:focus-visible {
 	background: rgba(119, 129, 238, 0.2);
 	transition: 0.3s ease-in-out;
   }
-  .kkartik07-1-btn:hover::before {
+  .kkartik07-btn-1:hover::before {
 	left: 55%;
   }
 /* kkartik07's 1st btn end */

index.html

@@ -435,7 +435,7 @@
 
             <!-- kkartik07's button start -->
             <div class="button-container">
-                <button class="kkartik07-1-btn"> Hover me </button>
+                <button class="kkartik07-btn-1"> Hover me </button>
                 <div class="createdby-section">
                     Created by
                     <a href="https://github.com/kkartik07">kkartik07</a>