削除機能を追加する

public/upload/index.html

@@ -18,7 +18,7 @@
       <input type="file" name="file_music" accept=".ogg,.mp3,.wav" required><br>
     </form>
 
-    <button type="button" onclick="uploadFiles()">今すぐ投稿！ (30秒ほどかかる場合があります)</button>
+    <button type="button" onclick="uploadFiles()">今すぐ投稿！ (1分ほどかかる場合があります)</button>
 
     <div id="error-view"></div>
   </body>

public/upload/style.css

@@ -1,8 +1,23 @@
+@font-face {
+  font-family: "Roboto";
+  font-style: normal;
+  font-weight: 400;
+  font-display: swap;
+  src: url(roboto/Roboto-Regular.ttf) format("truetype");
+}
+
+body * {
+  margin: 0;
+  font-family: "Roboto", sans-serif;
+  white-space: pre-line;
+  word-break: break-word;
+}
+
+body {
+  margin: 0;
+  padding: 3rem;
+}
+
 body > *:not(:last-child) {
   margin-bottom: 3rem;
 }
-
-#error-view {
-  word-break: break-word;
-  white-space: pre-line;
-}