diff --git a/kaku.css b/kaku.css
index f146876..45841f3 100644
--- a/kaku.css
+++ b/kaku.css
@@ -1,5 +1,5 @@
 body {
-   
+    font-family: Arial, sans-serif;
     display: flex;
     justify-content: center;
     align-items: center;
@@ -35,6 +35,19 @@
 }
 
 #history-list {
-    list-style-type: none;
-    padding: 0;
+    display: flex;
+    flex-wrap: wrap; /* 折り返しを有効に */
+    max-width: 240px; /* 32個分のアイテムが収まる幅に調整 */
+    margin: auto;
+    gap: 5px; /* 各履歴アイテムの間隔 */
+}
+
+.history-item {
+    font-size: 0.9em;
+    padding: 3px;
+    width: 30px;
+    text-align: center;
+    background-color: #e0e0e0;
+    border: 1px solid #ccc;
+    border-radius: 3px;
 }