diff --git a/css-ass/style.css b/css-ass/style.css
index e69de29..38c8527 100644
--- a/css-ass/style.css
+++ b/css-ass/style.css
@@ -0,0 +1,27 @@
+*{
+    font-family:pt sans;
+}
+
+#content-box{
+    
+    background-color:greenyellow;
+}
+
+#current-chapter > .chapter-name{
+    color:red;
+}
+
+#content-box .horizontal-lists{
+    color: blue;
+}    
+
+#content-box .chapter-name{
+    font-weight:bold;
+}
+
+h1{
+    margin-inline-start: 100px;
+    margin-inline-end: 100px;
+    margin-block-end: 1.0em;
+    text-align:center;
+}
diff --git a/js-ass/script.js b/js-ass/script.js
index 0233287..775516e 100644
--- a/js-ass/script.js
+++ b/js-ass/script.js
@@ -59,11 +59,26 @@ const isHigh = () => {
 
 const checkGuess = () => {
   const userGuess = Number(guessField.value);
+  
   if (guessCount === 1) {
     guesses.textContent = 'Previous guesses: ';
   }
 
+  if(guessCount===10){
+    gameOver();
+  }
+
+  else if(userGuess===randomNumber){
+    collect();
+  }
 
+  else if(userGuess>randomNumber){
+    isHigh();
+  }
+
+  else if(userGuess<randomNumber){
+    isLow();
+  }
   guesses.textContent += userGuess + ' ';
   // TODO 
   // 입력값에 따라 , isLow, isHigh, Collect 등의 함수를 호출 
@@ -72,6 +87,5 @@ const checkGuess = () => {
   guessField.value = '';
   guessField.focus();
 }
-
 guessSubmit.addEventListener('click', checkGuess);