[improvement] rename packages dir to src (#3659)

src/style/normalize.less

@@ -0,0 +1,39 @@
+/**
+ * Normalize
+ */
+
+html {
+  -webkit-tap-highlight-color: transparent;
+}
+
+body {
+  margin: 0;
+}
+
+a {
+  text-decoration: none;
+}
+
+a,
+input,
+button,
+textarea,
+[class*='van-'] {
+  &:focus {
+    outline: none;
+  }
+}
+
+ol,
+ul {
+  margin: 0;
+  padding: 0;
+  list-style: none;
+}
+
+input,
+button,
+textarea {
+  color: inherit;
+  font: inherit;
+}