--- a/app/assets/stylesheets/application.scss	Sun Feb 23 20:23:09 2020 +0900
+++ b/app/assets/stylesheets/application.scss	Sun Feb 23 22:25:50 2020 +0900
@@ -1,53 +1,31 @@
-@import "bootstrap-zp";
+@import "bootstrap/scss/bootstrap";
 @import "highlight.js/scss/default";
 
 .input-url1 { display: none !important; }
 
-// overrides bootstrap
-.form-control {
-  font-size: 16px;
-}
-
-.form-group--narrow {
-  max-width: 300px;
-}
-
 .paste-paste {
   resize: vertical;
   font-family: $font-family-monospace;
 }
 
+.paste-content {
+  border: none;
+  background-color: #fff;
+  padding: 0px;
+  margin: 0px;
+}
+
 .paste-show {
   padding: $grid-gutter-width/2;
   margin-bottom: $grid-gutter-width/2;
 
   border-width: 0px 1px 1px 1px;
   border-style: solid;
-  border-color: $nav-tabs-active-link-hover-border-color;
-  border-radius: 0px 0px $border-radius-base $border-radius-base;
-
-  &__content {
-    border: none;
-    background-color: #fff;
-    padding: 0px;
-    margin: 0px;
-  }
-
-  &__footer {
-    padding-bottom: $grid-gutter-width/2;
-  }
-}
-
-.radio-container {
-  margin-top: -10px;
+  border-color: $nav-tabs-border-color;
+  border-radius: 0px 0px $border-radius $border-radius;
 }
 
 .zp-hl {
   background-color: #fff;
   padding: 0px;
 }
-
-.zp-header {
-  margin-top: 0px;
-}
-