adding scss file

src/sass/main.scss

@@ -996,6 +996,7 @@ input[type=number] {
 @import "views/tab-send";
 @import "views/tab-settings";
 @import "views/walletDetails";
+@import "views/advancedSettings";
 @import "views/bitpayCard";
 @import "views/address-book";
 @import "views/wallet-backup-phrase";

src/sass/views/advancedSettings.scss

@@ -0,0 +1,53 @@
+.settings {
+  .item {
+    color: #444;
+    border-color: rgba(221, 221, 221, 0.3);
+  }
+}
+
+#advanced-settings {
+  .list {
+    .item {
+      color: #444;
+      border-top: none;
+      padding-top: 1.5rem;
+      padding-bottom: 1.5rem;
+      &:before {
+        display: block;
+        position: absolute;
+        width: 100%;
+        height: 1px;
+        background: rgba(221, 221, 221, 0.3);
+        top: 0;
+        right: 0;
+        content: '';
+      }
+      &.item-divider {
+        color: rgba(74, 74, 74, .8);
+      }
+      &.item-heading {
+        &:before {
+          top: 99%
+        }
+      }
+      &:nth-child(2) {
+        &:before {
+          width: 0;
+        }
+      }
+      .item-note {
+        color: rgb(58, 58, 58);
+      }
+    }
+    .comment {
+      padding: 15px;
+      background-color: #fff;
+      color: rgba(74, 74, 74, 0.8);
+    }
+    .divider-comment {
+      padding: 15px;
+      color: rgba(74, 74, 74, 0.8);
+      font-size: 15px;
+    }
+  }
+}