diff --git a/assets/sprite.svg b/assets/sprite.svg
index e2bc562..ea133f1 100644
--- a/assets/sprite.svg
+++ b/assets/sprite.svg
@@ -1,4 +1,18 @@
 <?xml version="1.0" encoding="utf-8"?>
 <svg xmlns="http://www.w3.org/2000/svg">
-<symbol id="bottom" viewBox="0 -16 512 512"><path d="m410.667969 245.332031h-160c-8.832031 0-16-7.167969-16-16s7.167969-16 16-16h160c8.832031 0 16 7.167969 16 16s-7.167969 16-16 16zm0 0"/><path d="m496 138.667969h-245.332031c-8.832031 0-16-7.167969-16-16s7.167969-16 16-16h245.332031c8.832031 0 16 7.167969 16 16s-7.167969 16-16 16zm0 0"/><path d="m410.667969 32h-160c-8.832031 0-16-7.167969-16-16s7.167969-16 16-16h160c8.832031 0 16 7.167969 16 16s-7.167969 16-16 16zm0 0"/><path d="m474.667969 448h-202.667969c-20.585938 0-37.332031-16.746094-37.332031-37.332031v-53.335938c0-20.585937 16.746093-37.332031 37.332031-37.332031h202.667969c20.585937 0 37.332031 16.746094 37.332031 37.332031v53.335938c0 20.585937-16.746094 37.332031-37.332031 37.332031zm-202.667969-96c-2.945312 0-5.332031 2.390625-5.332031 5.332031v53.335938c0 2.941406 2.386719 5.332031 5.332031 5.332031h202.667969c2.941406 0 5.332031-2.390625 5.332031-5.332031v-53.335938c0-2.941406-2.390625-5.332031-5.332031-5.332031zm0 0"/><path d="m176 400h-160c-8.832031 0-16-7.167969-16-16s7.167969-16 16-16h160c8.832031 0 16 7.167969 16 16s-7.167969 16-16 16zm0 0"/><path d="m96 480c-4.097656 0-8.191406-1.558594-11.308594-4.691406-6.25-6.253906-6.25-16.386719 0-22.636719l68.675782-68.671875-68.695313-68.691406c-6.25-6.253906-6.25-16.386719 0-22.636719s16.382813-6.25 22.636719 0l80 80c6.25 6.25 6.25 16.382813 0 22.636719l-80 80c-3.117188 3.132812-7.210938 4.691406-11.308594 4.691406zm0 0"/>
-</symbol></svg>
\ No newline at end of file
+<symbol id="downward" viewBox="0 0 512 512">
+<g>
+	<g>
+		<path d="M425.199,223.957c-13.303-13.303-34.961-13.303-48.205-0.06l-86.861,85.086V34.133C290.133,15.309,274.824,0,256,0
+			s-34.133,15.309-34.133,34.133v274.867l-86.801-85.052c-13.312-13.312-34.961-13.312-48.273,0
+			c-13.312,13.312-13.303,34.97,0,48.273c0.017,0.017,0.034,0.026,0.043,0.043l148.361,146.5c5.726,5.658,13.227,8.482,20.727,8.482
+			c7.543,0,15.078-2.859,20.787-8.568L425.199,272.23c6.451-6.443,10.001-15.019,10.001-24.132S431.65,230.409,425.199,223.957z"/>
+	</g>
+</g>
+<g>
+	<g>
+		<path d="M401.067,443.733H110.933c-18.825,0-34.133,15.309-34.133,34.133S92.109,512,110.933,512h290.133
+			c18.825,0,34.133-15.309,34.133-34.133S419.883,443.733,401.067,443.733z"/>
+	</g>
+</g>
+</symbol></svg>
diff --git a/common/header.html b/common/header.html
index 912e0f7..5177765 100644
--- a/common/header.html
+++ b/common/header.html
@@ -322,14 +322,14 @@
                   <div class="post-bottom-wrapper dekstop">
                     <a href="#bottom-anchor" title="${I18n.t(
                       themePrefix("post_bottom_tooltip")
-                    )}">${iconHTML("bottom")}</a>
+                    )}">${iconHTML("downward")}</a>
                     </div>
                     <ul id="d-toc">
                           <div class="d-toc-close-wrapper mobile">
                             <div class="post-bottom-wrapper">
                               <a href="#bottom-anchor" title="${I18n.t(
                                 themePrefix("post_bottom_tooltip")
-                              )}">${iconHTML("bottom")}</a>
+                              )}">${iconHTML("downward")}</a>
                               </div>
                             <div class="d-toc-close">
                               ${closeIcon}