diff --git a/README.md b/README.md
index 7408c87..f458763 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,13 @@
 # ExamSchedule
+
 ExamShowboard的轻量级实现
+
+## 快速使用
+
+填写`exam_config.json`后，确保安装Python。然后执行：
+
+```bash
+python3 -m http.server 8000
+```
+
+即可。
\ No newline at end of file
diff --git a/exam/styles.css b/exam/styles.css
index 67ffda8..a70f403 100644
--- a/exam/styles.css
+++ b/exam/styles.css
@@ -103,7 +103,7 @@ h1 {
 }
 
 #current-time {
-    font-size: 8rem;
+    font-size: 10rem;
     font-weight: bold;
     text-align: center;
     margin-bottom: 20px;