diff --git a/asset/docsify-quick-page.css b/asset/docsify-quick-page.css
index df2481f73abcd9bd29db3ee681e73d0bfbf6d2bd..2cbba5b7efa0471b83c351da7392aa46ca3131d3 100644
--- a/asset/docsify-quick-page.css
+++ b/asset/docsify-quick-page.css
@@ -5,7 +5,7 @@
 	height: 35px;
 	right: 15px;
 	background-color: transparent;
-	background-image: url(emoji-up.svg);
+	background-image: url(left.svg);
 	background-repeat: no-repeat;
     background-size: cover;
 	border:0;
@@ -15,7 +15,6 @@
     user-select: none;
 	outline:none;
 	cursor: pointer;
-	transform: rotate(-90deg);
 }
 
 #next-page-button {
@@ -25,7 +24,7 @@
 	height:35px;
 	right:15px;
 	background-color: transparent;
-	background-image: url(emoji-down.svg);
+	background-image: url(right.svg);
 	background-repeat: no-repeat;
     background-size: cover;
 	border:0;
@@ -35,5 +34,4 @@
     user-select: none;
 	outline:none;
 	cursor: pointer;
-	transform: rotate(-90deg);
 }
\ No newline at end of file
diff --git a/asset/emoji-down.svg b/asset/emoji-down.svg
deleted file mode 100644
index a1bea40f2b1c6aaf7557b642eb26fc7a3e5a32c1..0000000000000000000000000000000000000000
--- a/asset/emoji-down.svg
+++ /dev/null
@@ -1,14 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" ?>
-<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
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-</g>
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-<path fill="#ffffff" opacity="1.00" d=" M 7.10 11.78 C 8.93 8.64 12.14 6.07 15.93 6.20 C 26.66 6.08 37.40 6.08 48.12 6.21 C 51.87 6.08 55.00 8.63 56.87 11.68 C 53.76 10.71 51.53 7.73 48.06 7.80 C 37.71 7.50 27.33 7.68 16.98 7.71 C 13.09 7.39 10.42 10.42 7.10 11.78 Z" />
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-</g>
-<g id="#99b6d1ff">
-<path fill="#99b6d1" opacity="1.00" d=" M 7.10 11.78 C 10.42 10.42 13.09 7.39 16.98 7.71 C 27.33 7.68 37.71 7.50 48.06 7.80 C 51.53 7.73 53.76 10.71 56.87 11.68 L 57.26 11.83 C 58.92 15.37 57.92 19.29 57.68 23.01 C 57.90 28.35 51.68 31.04 47.10 30.53 C 44.08 30.83 40.31 29.21 38.07 31.97 L 37.98 32.03 C 38.32 25.70 38.33 19.36 38.38 13.03 C 34.13 13.00 29.87 13.00 25.62 13.03 C 25.66 19.37 25.68 25.72 26.01 32.06 L 25.91 31.97 C 23.74 29.20 19.90 30.86 16.94 30.53 C 12.36 31.08 6.20 28.36 6.33 23.06 C 6.13 19.37 5.01 15.43 6.75 11.93 L 7.10 11.78 Z" />
-</g>
-</svg>
diff --git a/asset/emoji-up.svg b/asset/emoji-up.svg
deleted file mode 100644
index 8701e7824ed552903e739fd2bfda239c10a6f9a1..0000000000000000000000000000000000000000
--- a/asset/emoji-up.svg
+++ /dev/null
@@ -1,16 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" ?>
-<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
-<svg width="64pt" height="64pt" viewBox="0 0 64 64" version="1.1" xmlns="http://www.w3.org/2000/svg">
-<g id="#6487a7ff">
-<path fill="#6487a7" opacity="1.00" d=" M 12.47 3.65 C 24.28 2.96 36.17 3.54 48.02 3.35 C 54.47 2.79 60.72 8.40 60.66 14.91 C 60.71 26.28 60.64 37.65 60.61 49.03 C 60.78 55.15 55.15 60.81 49.02 60.63 C 37.65 60.65 26.28 60.66 14.90 60.63 C 8.80 60.75 3.20 55.12 3.39 49.00 C 3.36 37.65 3.29 26.30 3.34 14.95 C 3.28 9.67 7.41 4.85 12.47 3.65 M 7.16 11.70 L 6.82 11.80 C 4.83 15.60 6.64 19.87 6.44 23.91 C 6.61 28.17 11.40 29.74 14.84 30.72 C 17.07 28.45 19.10 26.00 21.46 23.86 L 21.57 25.57 C 19.73 27.82 17.87 30.05 15.89 32.18 C 19.13 32.13 22.37 32.17 25.62 32.20 C 25.64 38.52 25.73 44.83 25.66 51.15 C 29.89 51.19 34.11 51.19 38.34 51.15 C 38.27 44.84 38.36 38.52 38.38 32.20 C 41.62 32.17 44.86 32.14 48.11 32.18 C 46.14 30.06 44.28 27.84 42.46 25.60 L 42.41 23.71 C 44.79 25.89 46.88 28.35 49.06 30.72 C 52.52 29.74 57.36 28.26 57.55 23.96 C 57.33 19.90 59.17 15.62 57.18 11.81 L 56.84 11.71 C 55.05 8.58 51.80 6.07 48.06 6.20 C 37.35 6.09 26.63 6.09 15.92 6.20 C 12.17 6.06 8.97 8.60 7.16 11.70 Z" />
-<path fill="#6487a7" opacity="1.00" d=" M 22.28 24.67 C 21.65 22.20 24.44 19.81 26.71 19.29 C 25.18 21.04 23.73 22.86 22.28 24.67 Z" />
-<path fill="#6487a7" opacity="1.00" d=" M 37.26 19.26 C 39.57 19.85 42.16 22.07 41.70 24.65 C 40.25 22.83 38.79 21.02 37.26 19.26 Z" />
-</g>
-<g id="#ffffffff">
-<path fill="#ffffff" opacity="1.00" d=" M 7.16 11.70 C 8.97 8.60 12.17 6.06 15.92 6.20 C 26.63 6.09 37.35 6.09 48.06 6.20 C 51.80 6.07 55.05 8.58 56.84 11.71 C 54.64 11.40 53.39 9.32 51.41 8.55 C 49.37 7.72 47.14 7.64 44.98 7.63 C 36.31 7.67 27.65 7.67 18.98 7.63 C 16.82 7.64 14.60 7.73 12.57 8.55 C 10.60 9.32 9.35 11.41 7.16 11.70 Z" />
-<path fill="#ffffff" opacity="1.00" d=" M 26.71 19.29 C 28.60 17.39 30.27 15.29 32.00 13.24 C 33.72 15.28 35.38 17.37 37.26 19.26 C 38.79 21.02 40.25 22.83 41.70 24.65 C 41.95 24.97 42.20 25.29 42.46 25.60 C 44.28 27.84 46.14 30.06 48.11 32.18 C 44.86 32.14 41.62 32.17 38.38 32.20 C 38.36 38.52 38.27 44.84 38.34 51.15 C 34.11 51.19 29.89 51.19 25.66 51.15 C 25.73 44.83 25.64 38.52 25.62 32.20 C 22.37 32.17 19.13 32.13 15.89 32.18 C 17.87 30.05 19.73 27.82 21.57 25.57 C 21.81 25.27 22.05 24.97 22.28 24.67 C 23.73 22.86 25.18 21.04 26.71 19.29 Z" />
-</g>
-<g id="#9cb8d3ff">
-<path fill="#9cb8d3" opacity="1.00" d=" M 12.57 8.55 C 14.60 7.73 16.82 7.64 18.98 7.63 C 27.65 7.67 36.31 7.67 44.98 7.63 C 47.14 7.64 49.37 7.72 51.41 8.55 C 53.39 9.32 54.64 11.40 56.84 11.71 L 57.18 11.81 C 59.17 15.62 57.33 19.90 57.55 23.96 C 57.36 28.26 52.52 29.74 49.06 30.72 C 46.88 28.35 44.79 25.89 42.41 23.71 L 42.46 25.60 C 42.20 25.29 41.95 24.97 41.70 24.65 C 42.16 22.07 39.57 19.85 37.26 19.26 C 35.38 17.37 33.72 15.28 32.00 13.24 C 30.27 15.29 28.60 17.39 26.71 19.29 C 24.44 19.81 21.65 22.20 22.28 24.67 C 22.05 24.97 21.81 25.27 21.57 25.57 L 21.46 23.86 C 19.10 26.00 17.07 28.45 14.84 30.72 C 11.40 29.74 6.61 28.17 6.44 23.91 C 6.64 19.87 4.83 15.60 6.82 11.80 L 7.16 11.70 C 9.35 11.41 10.60 9.32 12.57 8.55 Z" />
-</g>
-</svg>
diff --git a/asset/left.svg b/asset/left.svg
new file mode 100644
index 0000000000000000000000000000000000000000..5f3e9a079b2d12ba49368592cd545853be5549f9
--- /dev/null
+++ b/asset/left.svg
@@ -0,0 +1,10 @@
+<!--?xml version="1.0" encoding="UTF-8" standalone="no"?-->
+<svg viewBox="0 0 17 16" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" class="si-glyph si-glyph-arrow-thick-left">
+    <!-- Generator: Sketch 3.0.3 (7891) - http://www.bohemiancoding.com/sketch -->
+    <title>1210</title>
+    
+    <defs></defs>
+    <g stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
+        <path d="M0.133,8.367 L6.073,13.713 C6.307,13.924 6.687,13.922 6.922,13.711 L6.927,9.983 L14.951,9.983 C15.504,9.983 15.951,9.544 15.951,9.001 L15.951,7.035 C15.951,6.492 15.504,6.053 14.951,6.053 L6.931,6.053 L6.936,2.243 C6.705,2.034 6.324,2.035 6.088,2.246 L0.134,7.603 C-0.099,7.816 -0.102,8.156 0.133,8.367 L0.133,8.367 Z" fill="#434343" class="si-glyph-fill"></path>
+    </g>
+</svg>
\ No newline at end of file
diff --git a/asset/right.svg b/asset/right.svg
new file mode 100644
index 0000000000000000000000000000000000000000..7e4d26e3281f614c3908ec89c5c89aa34433da4e
--- /dev/null
+++ b/asset/right.svg
@@ -0,0 +1,10 @@
+<!--?xml version="1.0" encoding="UTF-8" standalone="no"?-->
+<svg viewBox="0 0 17 17" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" class="si-glyph si-glyph-arrow-thick-right">
+    <!-- Generator: Sketch 3.0.3 (7891) - http://www.bohemiancoding.com/sketch -->
+    <title>1209</title>
+    
+    <defs></defs>
+    <g stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
+        <path d="M16.818,7.646 L10.878,2.206 C10.644,1.992 10.264,1.993 10.029,2.208 L10.024,6.001 L2,6.001 C1.447,6.001 1,6.448 1,7.001 L1,9.001 C1,9.554 1.447,10.001 2,10.001 L10.019,10.001 L10.013,13.878 C10.245,14.091 10.626,14.09 10.862,13.875 L16.816,8.423 C17.049,8.206 17.052,7.859 16.818,7.646 L16.818,7.646 Z" fill="#434343" class="si-glyph-fill"></path>
+    </g>
+</svg>
\ No newline at end of file