diff --git a/public/static/css/style.css b/public/static/css/style.css
index bcda63c..175195b 100644
--- a/public/static/css/style.css
+++ b/public/static/css/style.css
@@ -202,9 +202,17 @@ input,select,textarea{outline:medium none; resize: none;}
 .about-box2 .lower-box .pull-right{ width: 38%; height: 41.875rem; overflow: auto; position: absolute; right: 0; top: 0;}
 .about-box2 .lower-box .pull-right ul li{ width: 100%; float: left; font-size: 16px; color: #888; margin-bottom: 25px; cursor: pointer; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; position: relative; transition: all .6s;}
 .about-box2 .lower-box .pull-right ul li::after{ content: ''; width: 0; height: 1px; background: #003486; position: absolute; left: 0; top: 50%; transition: all .6s;}
-.about-box2 .lower-box .pull-right ul li:hover,.about-box2 .lower-box .pull-right ul li.active{ padding-left: 2.9rem; color: #003486;}
+.about-box2 .lower-box .pull-right ul li:hover,.about-box2 .lower-box .pull-right ul li.active{ padding-left: 2.9rem; color: #003486; font-weight: bold;}
 .about-box2 .lower-box .pull-right ul li:hover::after,.about-box2 .lower-box .pull-right ul li.active::after{ width: 2.625rem;}
 
+.about-box2 .lower-box .pull-right::-webkit-scrollbar{ width: 22px; background: #F8F9FB;}
+.about-box2 .lower-box .pull-right::-webkit-scrollbar-thumb{ background: #CECECE;}
+.about-box2 .lower-box .pull-right::-webkit-scrollbar-button:single-button:start{ height: 22px; background: url(../image/ico_jt1_u.png) no-repeat center; background-size: 60%; cursor: pointer;}
+.about-box2 .lower-box .pull-right::-webkit-scrollbar-button:single-button:end{ height: 22px; background: url(../image/ico_jt1_d.png) no-repeat center; background-size: 60%; cursor: pointer;}
+.about-box2 .lower-box .pull-right::-webkit-scrollbar-button:hover{ background-color: #ddd !important;}
+.about-box2 .lower-box .pull-right::-webkit-scrollbar-button:active{ background-color: #d2d2d2 !important;}
+
+
 .about-box3{ padding: 3.75rem 0; background: #F5F5F5;}
 .about-box3 .box-info{ margin-top: -5rem;}
 
diff --git a/public/static/image/ico_jt1_d.png b/public/static/image/ico_jt1_d.png
new file mode 100644
index 0000000..5672a7a
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diff --git a/public/static/image/ico_jt1_l.png b/public/static/image/ico_jt1_l.png
new file mode 100644
index 0000000..8fa25db
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diff --git a/public/static/image/ico_jt1_r.png b/public/static/image/ico_jt1_r.png
new file mode 100644
index 0000000..e7d8e7b
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diff --git a/public/static/image/ico_jt1_u.png b/public/static/image/ico_jt1_u.png
new file mode 100644
index 0000000..584e515
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