feat(client): add fit-font class

Author: hiroppy

packages/client/assets/style/customize.css

@@ -73,3 +73,7 @@
   display: flex;
   align-items: center;
 }
+
+.fit-font {
+  font-size: 25.5vw;
+}

packages/client/src/components/Assistant.js

@@ -122,6 +122,10 @@ export const Assistant = () => (
                   title: 'Table of Contents',
                   content: <code>{`.toc`}</code>,
                 },
+                {
+                  title: 'Fitting to Fill Text',
+                  content: <code>{`.fit-font`}</code>,
+                },
               ]}
             />
           </Item>

packages/playground/debug/style.css

@@ -29,11 +29,3 @@
 .inner {
   color: #3498db;
 }
-
-.sns-box {
-  margin: 16px 0;
-
-  & > :not(:first-child) {
-    margin-left: 16px;
-  }
-}