diff --git a/src/scss/modules/_base.scss b/src/scss/modules/_base.scss
index 647a1fa..068e71b 100644
--- a/src/scss/modules/_base.scss
+++ b/src/scss/modules/_base.scss
@@ -17,3 +17,10 @@ input, textarea {
 a { text-decoration: none; }
 
 iframe { border: none; }
+
+#root {
+  position: absolute;
+  top: 0; left: 0;
+  width: 100%; height: 100%;
+  overflow: hidden;
+}
diff --git a/src/scss/modules/sp/_page-box.scss b/src/scss/modules/sp/_page-box.scss
index f6d09a8..dfa4d34 100644
--- a/src/scss/modules/sp/_page-box.scss
+++ b/src/scss/modules/sp/_page-box.scss
@@ -50,6 +50,7 @@
     border-radius: 15px;
     box-shadow: 0 0 15px rgba(0,0,0,0.6) inset;
     overflow: auto;
+    -webkit-overflow-scrolling: touch;
     opacity: 0;
     transition: all 0.35s ease 0s;
 
@@ -110,7 +111,7 @@
         position: absolute;
         top: 24px; left: 10px;
         width: 30px; height: 1px;
-        border-top: dashed 2px $theme-purple;
+        background-color: $theme-purple;
         box-sizing: border-box;
         opacity: 0.7;
       }
diff --git a/src/scss/modules/tablet/_page-box.scss b/src/scss/modules/tablet/_page-box.scss
index c81333e..99f4882 100644
--- a/src/scss/modules/tablet/_page-box.scss
+++ b/src/scss/modules/tablet/_page-box.scss
@@ -50,6 +50,7 @@
     border-radius: 15px;
     box-shadow: 0 0 15px rgba(0,0,0,0.6) inset;
     overflow: auto;
+    -webkit-overflow-scrolling: touch;
     opacity: 0;
     transition: all 0.35s ease 0s;