diff --git a/themes/default/public/css/lufi.css b/themes/default/public/css/lufi.css
index 381dad5..6cd4a46 100644
--- a/themes/default/public/css/lufi.css
+++ b/themes/default/public/css/lufi.css
@@ -33,31 +33,31 @@
 
 @font-face {
   font-family: "Roboto";
-  src: url("../font/roboto/Roboto-Thin.ttf") format("truetype");
+  src: url("../font/roboto/Roboto-Thin.woff2") format("woff2");
   font-weight: 200;
 }
 
 @font-face {
   font-family: "Roboto";
-  src: url("../font/roboto/Roboto-Light.ttf") format("truetype");
+  src: url("../font/roboto/Roboto-Light.woff2") format("woff2");
   font-weight: 300;
 }
 
 @font-face {
   font-family: "Roboto";
-  src: url("../font/roboto/Roboto-Regular.ttf") format("truetype");
+  src: url("../font/roboto/Roboto-Regular.woff2") format("woff2");
   font-weight: 400;
 }
 
 @font-face {
   font-family: "Roboto";
-  src: url("../font/roboto/Roboto-Medium.ttf") format("truetype");
+  src: url("../font/roboto/Roboto-Medium.woff2") format("woff2");
   font-weight: 500;
 }
 
 @font-face {
   font-family: "Roboto";
-  src: url("../font/roboto/Roboto-Bold.ttf") format("truetype");
+  src: url("../font/roboto/Roboto-Bold.woff2") format("woff2");
   font-weight: 700;
 }
 
@@ -178,6 +178,14 @@ a.button {
   background: var(--icon-color);
 }
 
+.icon.hide-source {
+  width: 2rem;
+  height: 2rem;
+  mask: url("../icon/hide-source.svg");
+  mask-repeat: no-repeat;
+  background: var(--icon-color);
+}
+
 .icon.mail {
   width: 2rem;
   height: 2rem;
diff --git a/themes/default/public/font/roboto/Roboto-Black.ttf b/themes/default/public/font/roboto/Roboto-Black.ttf
deleted file mode 100644
index 58fa175..0000000
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diff --git a/themes/default/public/font/roboto/Roboto-BlackItalic.ttf b/themes/default/public/font/roboto/Roboto-BlackItalic.ttf
deleted file mode 100644
index 0a4dfd0..0000000
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diff --git a/themes/default/public/font/roboto/Roboto-Bold.ttf b/themes/default/public/font/roboto/Roboto-Bold.ttf
deleted file mode 100644
index e64db79..0000000
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diff --git a/themes/default/public/font/roboto/Roboto-Bold.woff2 b/themes/default/public/font/roboto/Roboto-Bold.woff2
new file mode 100644
index 0000000..350d1c3
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diff --git a/themes/default/public/font/roboto/Roboto-BoldItalic.ttf b/themes/default/public/font/roboto/Roboto-BoldItalic.ttf
deleted file mode 100644
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diff --git a/themes/default/public/font/roboto/Roboto-Italic.ttf b/themes/default/public/font/roboto/Roboto-Italic.ttf
deleted file mode 100644
index 65498ee..0000000
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diff --git a/themes/default/public/font/roboto/Roboto-Light.ttf b/themes/default/public/font/roboto/Roboto-Light.ttf
deleted file mode 100644
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diff --git a/themes/default/public/font/roboto/Roboto-Light.woff2 b/themes/default/public/font/roboto/Roboto-Light.woff2
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diff --git a/themes/default/public/font/roboto/Roboto-LightItalic.ttf b/themes/default/public/font/roboto/Roboto-LightItalic.ttf
deleted file mode 100644
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diff --git a/themes/default/public/font/roboto/Roboto-Medium.ttf b/themes/default/public/font/roboto/Roboto-Medium.ttf
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diff --git a/themes/default/public/font/roboto/Roboto-Medium.woff2 b/themes/default/public/font/roboto/Roboto-Medium.woff2
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diff --git a/themes/default/public/font/roboto/Roboto-MediumItalic.ttf b/themes/default/public/font/roboto/Roboto-MediumItalic.ttf
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diff --git a/themes/default/public/font/roboto/Roboto-Regular.ttf b/themes/default/public/font/roboto/Roboto-Regular.ttf
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index 0000000..b7082ef
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diff --git a/themes/default/public/font/roboto/Roboto-Thin.ttf b/themes/default/public/font/roboto/Roboto-Thin.ttf
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diff --git a/themes/default/public/font/roboto/Roboto-Thin.woff2 b/themes/default/public/font/roboto/Roboto-Thin.woff2
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diff --git a/themes/default/public/font/roboto/Roboto-ThinItalic.ttf b/themes/default/public/font/roboto/Roboto-ThinItalic.ttf
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