Removed Underline

I have modified the code for the check button.

buy.html

@@ -398,7 +398,7 @@ <h2>Book Your Ticket</h2>
           <label for="destination">Destination</label>
           <input type="text" id="destination" name="destination" placeholder="To" required>
         </div>
-        <a href="check_availability.html">
+        <a href="check_availability.html" class="no-underline">
             <button type="button" class="submit-btn">Check Availability</button>
         </a>
         </form>
@@ -493,7 +493,9 @@ <h2>Book Your Ticket</h2>
   font-size: 1.25rem;
   margin-top: 30px;
 }
-
+.no-underline{
+  text-decoration: none;
+}
 .submit-btn:hover {
   background-color: transparent;
   color: #ff4d4d;