diff --git a/web/styles.css b/web/styles.css
new file mode 100644
index 0000000..1551f3f
--- /dev/null
+++ b/web/styles.css
@@ -0,0 +1,166 @@
+* {
+  margin: 0;
+  padding: 0;
+  box-sizing: border-box;
+}
+
+@font-face {
+  font-family: 'Routed Gothic';
+  src: local('Routed Gothic'), url('fonts/routed-gothic.ttf') format('truetype');
+}
+
+
+body,
+html {
+  height: 100%;
+  font-family: Routed Gothic;
+}
+
+#resizer {
+  border-style: dashed;
+  /* 设置边框样式为虚线 */
+  border-width: 1px;
+  /* 设置边框宽度 */
+  cursor: ew-resize;
+  /* 设置光标样式为水平调整 */
+}
+
+/* .resizer {
+  width: 5px;
+  background-color: #888;
+  cursor: ew-resize;
+} */
+
+
+.container {
+  display: flex;
+  height: 100%;
+}
+
+.sidebar {
+  background-color: white;
+  color: black;
+  width: 25%;
+  overflow-y: auto;
+}
+
+.projects-submenu .subtab {
+  padding-left: 50px;
+
+}
+
+
+
+.tab,
+.subtab {
+  padding: 15px;
+  cursor: pointer;
+}
+
+.tab:hover,
+.subtab:hover {
+  background-color: #F3F3F3;
+}
+
+.projects-submenu {
+  display: none;
+  background-color: white;
+}
+
+
+.tab.active+.projects-submenu {
+  display: block;
+}
+
+
+
+.content {
+  flex-grow: 1;
+  background-color: #f0f0f0;
+  padding: 20px;
+  overflow-y: auto;
+}
+
+#matter-canvas {
+  width: 100%;
+  height: 100%;
+}
+
+
+.content-tab {
+  display: none;
+}
+
+/* 默认样式适用于大屏幕 */
+.content-tab {
+  max-width: 800px;
+  /* 限制内容宽度，使其不至于过宽 */
+  margin: 0 auto;
+  /* 居中内容 */
+  padding: 20px;
+}
+
+/* 在小屏幕上应用不同的样式 */
+@media (max-width: 768px) {
+  .content-tab {
+    padding: 10px;
+  }
+
+  .content-tab h1 {
+    font-size: 24px;
+    /* 标题字体大小适应小屏幕 */
+  }
+
+  .content-tab p {
+    font-size: 16px;
+    /* 段落字体大小适应小屏幕 */
+  }
+}
+
+.content-tab h1 {
+  font-size: 36px;
+  line-height: 1.2;
+  padding-bottom: 1em;
+}
+
+.content-tab p {
+  font-size: 18px;
+  line-height: 1.5;
+  padding-bottom: 1em;
+}
+
+.content-tab img {
+  max-width: 100%;
+  /* 图片宽度最大不超过父元素 */
+  height: auto;
+  /* 高度自动调整 */
+}
+
+
+
+.content-tab.active {
+  display: block;
+}
+
+.button {
+  display: inline-block;
+  padding: 0.5rem 2rem;
+  /* 上下留0.5rem，左右留2rem */
+  background: #FFFFFF;
+  color: #333;
+  text-decoration: none;
+  /* 取消默认的下划线 */
+  border: none;
+  border-radius: 20px;
+  box-shadow: inset 4px 4px 10px rgba(96, 96, 96, 0.25);
+  cursor: pointer;
+  font-size: 16px;
+  line-height: 1;
+  /* 让文字垂直居中 */
+  transition: box-shadow 0.3s ease;
+  margin-bottom: 2rem;
+}
+
+.button:hover {
+  box-shadow: 4px 4px 10px rgba(96, 96, 96, 0.25);
+}
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