规定数据类型

client/src/styles/reset.css

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+/* CSS Reset */
+*,
+*::before,
+*::after {
+  margin: 0;
+  padding: 0;
+  box-sizing: border-box;
+}
+
+html,
+body,
+#app {
+  width: 100%;
+  height: 100%;
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
+    Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
+}
+
+ul,
+ol {
+  list-style: none;
+}
+
+a {
+  text-decoration: none;
+  color: inherit;
+}
+
+button {
+  border: none;
+  background: none;
+  cursor: pointer;
+  font: inherit;
+  color: inherit;
+}
+
+input,
+textarea,
+select {
+  font: inherit;
+  color: inherit;
+}
+
+img,
+video {
+  max-width: 100%;
+  height: auto;
+  display: block;
+}