modify button

@@ -103,7 +103,8 @@
         </div></div>
       </div>
         <a href="#result" class="button2 text-center tm-down-arrow-link">
-          <i class="fas fa-3x fa-caret-down tm-down-arrow">계산해보기</i>
+          <button style= "color:black" class="fas fa-3x fa-caret-down tm-down-arrow" type="button" onclick="semester();return false;">계산하기
+            </button>
         </a>
       </div>
     </section>