feat: build mini app frontend pages

src/pages/agreement/index.scss

@@ -0,0 +1,51 @@
+.agreement-page {
+  color: #222;
+  padding-left: 30px;
+  padding-right: 30px;
+}
+
+.tabs {
+  margin-top: 210px;
+  display: flex;
+  justify-content: space-around;
+}
+
+.tab {
+  position: relative;
+  color: #8f640d;
+  font-size: 34px;
+  font-weight: 700;
+  padding-bottom: 18px;
+}
+
+.current::after {
+  content: '';
+  position: absolute;
+  left: 32px;
+  right: 32px;
+  bottom: 0;
+  height: 8px;
+  border-radius: 4px;
+  background: #8f640d;
+}
+
+.article {
+  height: calc(100vh - 350px);
+  margin-top: 42px;
+}
+
+.article-title {
+  display: block;
+  color: #252525;
+  font-size: 40px;
+  font-weight: 800;
+  margin-bottom: 26px;
+}
+
+.paragraph {
+  display: block;
+  color: #2f2f2f;
+  font-size: 30px;
+  line-height: 1.95;
+  margin-bottom: 28px;
+}