不成熟的改进

styles.tcss

@@ -0,0 +1,55 @@
+
+Screen {
+    align: center middle;
+}
+
+#main_container {
+    align: center middle;
+    width: 80%;
+    height: auto;
+    border: thick $primary-lighten-2;
+    padding: 2;
+}
+
+#sentence {
+    content-align: center middle;
+    width: 100%;
+    height: 5;
+    margin-bottom: 2;
+    text-style: bold;
+}
+
+#progress {
+    width: 100%;
+    content-align: center middle;
+    margin-bottom: 1;
+    color: $text-muted;
+}
+
+
+
+Button {
+    align-horizontal: center;
+    width: 50%;
+    margin: 0 0;
+}
+.choice {
+    align-horizontal: center;
+    width: 50%;
+    margin: 0 0;
+    height: auto;
+}
+/* no_margin.tcss */
+
+#button_container {
+    align-horizontal: center;
+    height: 9;
+}
+
+/* 选中 #button_container 下所有的 Horizontal 子元素 */
+#button_container > Horizontal {
+    margin-top: 0;
+    margin-bottom: 0;
+    align-horizontal: center;
+    width: 40%;
+}