添加测试配置及登陆部分的测试

Change-Id: I6fa1fe23ad8773548927fdc921dceab841f2368a
diff --git a/src/global.css b/src/global.css
index 7dfec7b..8d1922e 100644
--- a/src/global.css
+++ b/src/global.css
@@ -9,4 +9,16 @@
     align-items: center;
     font-family: Arial, sans-serif; /* Optional: Set a global font */
     box-sizing: border-box;
+}
+.root {
+    margin: 0;
+    padding: 0;
+    height: 100vh;
+    width: 100vw;
+    background-color: #e6f7ff; /* Light blue background */
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    font-family: Arial, sans-serif; /* Optional: Set a global font */
+    box-sizing: border-box;
 }
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