diff --git a/app/src/assets/scss/business/_card.scss b/app/src/assets/scss/business/_card.scss
index ef502733d..a9168427e 100644
--- a/app/src/assets/scss/business/_card.scss
+++ b/app/src/assets/scss/business/_card.scss
@@ -5,7 +5,7 @@
     max-height: 100%;
     background-color: var(--b3-theme-surface);
 
-    &.fullscreen > .b3-form__space--small {
+    &.fullscreen > .card__header {
       padding-left: var(--b3-toolbar-left-mac);
     }
   }
diff --git a/app/src/assets/scss/util/_reset.scss b/app/src/assets/scss/util/_reset.scss
index 9d7532299..26c1730e1 100644
--- a/app/src/assets/scss/util/_reset.scss
+++ b/app/src/assets/scss/util/_reset.scss
@@ -58,6 +58,10 @@ body {
       padding: 0 0 0 5px;
     }
 
+    .card__main.fullscreen > .card__header {
+      padding-right: 108px;
+    }
+
     .fullscreen {
       & > .protyle-breadcrumb,
       & > .block__icons {
diff --git a/app/src/card/openCard.ts b/app/src/card/openCard.ts
index 1f7f2cdda..7c98b3291 100644
--- a/app/src/card/openCard.ts
+++ b/app/src/card/openCard.ts
@@ -44,10 +44,10 @@ export const openCardByData = (cardsData: ICard[], html = "") => {
     <div class="card__header">
         <span class="fn__flex-1 fn__flex-center">${window.siyuan.languages.riffCard}</span>
         ${html}
-        <div class="fn__space"></div>
+        ${isMobile() ? "" : `<div class="fn__space"></div>
         <div data-type="fullscreen" class="b3-tooltips b3-tooltips__sw block__icon block__icon--show" aria-label="${window.siyuan.languages.fullscreen}">
             <svg><use xlink:href="#iconFullscreen"></use></svg>
-        </div>
+        </div>`}
     </div>
     <div class="card__block fn__flex-1${blocks.length === 0 ? " fn__none" : ""}${window.siyuan.config.flashcard.mark ? " card__block--hidemark" : ""}${window.siyuan.config.flashcard.superBlock ? " card__block--hidesb" : ""}${window.siyuan.config.flashcard.list ? " card__block--hideli" : ""}" data-type="render"></div>
     <div class="card__empty${blocks.length === 0 ? "" : " fn__none"}" data-type="empty">
@@ -133,7 +133,6 @@ export const openCardByData = (cardsData: ICard[], html = "") => {
     const countElement = dialog.element.querySelector('[data-type="count"]');
     const actionElements = dialog.element.querySelectorAll(".card__action");
     const selectElement = dialog.element.querySelector("select");
-    const titleElement = countElement.previousElementSibling;
     dialog.element.addEventListener("click", (event) => {
         const fullscreenElement = hasClosestByAttribute(event.target as HTMLElement, "data-type", "fullscreen");
         if (fullscreenElement) {
@@ -219,6 +218,7 @@ export const openCardByData = (cardsData: ICard[], html = "") => {
                 /// #endif
                 index++;
                 if (index > blocks.length - 1) {
+                    const titleElement = countElement.previousElementSibling;
                     fetchPost(selectElement ? "/api/riff/getRiffDueCards" :
                         (titleElement.getAttribute("data-id") ? "/api/riff/getTreeRiffDueCards" : "/api/riff/getNotebookRiffDueCards"), {
                         rootID: titleElement.getAttribute("data-id"),