样式优化

app/palicanon/palicanon.js

@@ -185,11 +185,11 @@ function render_chapter_head(chapter_info, parent) {
 		parent +
 		"')\">back</span></div>";
 	html +=
-		"<div><span class='chapter_close_button' id='chapter_close_" +
+		"<div><button class='chapter_close_button' id='chapter_close_" +
 		(parent + 1) +
 		"' onclick=\"chapter_back('" +
 		parent +
-		"')\">back</span></div>";
+		"')\">⬅</button></div>";
 	html += "</div>";
 	let link = "../reader/?view=chapter&book=" + chapter_info.book + "&par=" + chapter_info.paragraph;
 	html += "<div class='title'>";

app/palicanon/style.css

@@ -124,6 +124,11 @@ tag {
 .chapter_list {
 	display: flex;
 }
+.chapter_list > div{
+	max-height: calc(100vh - 100px);
+    overflow-y: scroll;
+
+}
 .chapter_list .grid {
 	width: 400px;
 	max-width: 100%;
@@ -203,7 +208,7 @@ tag {
 }
 /*当前选择書標題特殊樣式*/
 li.level_1.selected {
-	height: 250px;
+	/*height: 250px;*/
 	background: linear-gradient(45deg, #e89650 20%, transparent 90%);
 }
 .progress_circle {