diff --git a/ext/bg/search.html b/ext/bg/search.html
index f3f156d8..c0721e5c 100644
--- a/ext/bg/search.html
+++ b/ext/bg/search.html
@@ -54,8 +54,8 @@
             <hr>
 
             <div id="navigation-header" class="navigation-header" hidden><div class="navigation-header-actions">
-                <button class="action-button action-previous"><img src="/mixed/img/source-term.svg" class="icon-image" title="Source term (Alt + B)" alt></button>
-                <button class="action-button action-next"><img src="/mixed/img/source-term.svg" class="icon-image" title="Next term (Alt + F)" alt></button>
+                <button class="action-button action-previous" data-icon="source-term" title="Source term (Alt + B)"></button>
+                <button class="action-button action-next" data-icon="source-term" title="Next term (Alt + F)"></button>
             </div></div><div class="navigation-header-spacer"></div>
 
             <div id="content"></div>
diff --git a/ext/fg/float.html b/ext/fg/float.html
index 89952524..e9f5acae 100644
--- a/ext/fg/float.html
+++ b/ext/fg/float.html
@@ -17,8 +17,8 @@
         <div id="spinner" hidden><img src="/mixed/img/spinner.gif"></div>
 
         <div id="navigation-header" class="navigation-header" hidden><div class="navigation-header-actions">
-            <button class="action-button action-previous"><img src="/mixed/img/source-term.svg" class="icon-image" title="Source term (Alt + B)" alt></button>
-            <button class="action-button action-next"><img src="/mixed/img/source-term.svg" class="icon-image" title="Next term (Alt + F)" alt></button>
+            <button class="action-button action-previous" data-icon="source-term" title="Source term (Alt + B)"></button>
+            <button class="action-button action-next" data-icon="source-term" title="Next term (Alt + F)"></button>
         </div></div><div class="navigation-header-spacer"></div>
 
         <div id="definitions"></div>
diff --git a/ext/mixed/css/display.css b/ext/mixed/css/display.css
index 8b567173..a92775b8 100644
--- a/ext/mixed/css/display.css
+++ b/ext/mixed/css/display.css
@@ -27,13 +27,12 @@
     --default-text-color: #333333;
     --light-text-color: #777777;
     --very-light-text-color: #999999;
+    --popuplar-kanji-text-color: #0275d8;
 
     --light-border-color: #eeeeee;
     --medium-border-color: #dddddd;
     --dark-border-color: #777777;
 
-    --popuplar-kanji-text-color: #0275d8;
-
     --pitch-accent-annotation-color: #000000;
 
     --tag-text-color: #ffffff;
@@ -58,13 +57,12 @@
     --default-text-color: #d4d4d4;
     --light-text-color: #888888;
     --very-light-text-color: #666666;
+    --popuplar-kanji-text-color: #0275d8;
 
     --light-border-color: #2f2f2f;
     --medium-border-color: #3f3f3f;
     --dark-border-color: #888888;
 
-    --popuplar-kanji-text-color: #0275d8;
-
     --pitch-accent-annotation-color: #ffffff;
 
     --tag-text-color: #e1e1e1;
@@ -173,14 +171,14 @@ h2 {
     display: flex;
 }
 
-.navigation-header:not([data-has-previous=true]) .navigation-header-actions .action-previous>img,
-.navigation-header:not([data-has-next=true]) .navigation-header-actions .action-next>img {
+.navigation-header:not([data-has-previous=true]) .navigation-header-actions .action-button.action-previous:before,
+.navigation-header:not([data-has-next=true]) .navigation-header-actions .action-button.action-next:before {
     opacity: 0.25;
     -webkit-filter: grayscale(100%);
     filter: grayscale(100%);
 }
 
-.action-next>img {
+.action-button.action-next:before {
     transform: scaleX(-1);
 }
 
@@ -234,18 +232,18 @@ h2 {
     padding-right: 0.72em;
 }
 
-.actions .disabled {
+.action-button.disabled {
     pointer-events: none;
     cursor: default;
 }
 
-.actions .disabled img {
+.action-button.disabled:before {
     -webkit-filter: grayscale(100%);
     filter: grayscale(100%);
     opacity: 0.25;
 }
 
-.actions .pending {
+.action-button.pending {
     visibility: hidden;
 }
 
@@ -274,10 +272,32 @@ button.action-button {
     cursor: pointer;
 }
 
-.icon-image {
+.action-button[data-icon]:before {
+    content: "";
     width: 1.14285714em; /* 14px => 16px */
     height: 1.14285714em; /* 14px => 16px */
     display: block;
+    background-color: transparent;
+    background-repeat: no-repeat;
+}
+
+.action-button[data-icon=entry-current]:before {
+    background-image: url("/mixed/img/entry-current.svg");
+}
+.action-button[data-icon=view-note]:before {
+    background-image: url("/mixed/img/view-note.svg");
+}
+.action-button[data-icon=add-term-kanji]:before {
+    background-image: url("/mixed/img/add-term-kanji.svg");
+}
+.action-button[data-icon=add-term-kana]:before {
+    background-image: url("/mixed/img/add-term-kana.svg");
+}
+.action-button[data-icon=play-audio]:before {
+    background-image: url("/mixed/img/play-audio.svg");
+}
+.action-button[data-icon=source-term]:before {
+    background-image: url("/mixed/img/source-term.svg");
 }
 
 .term-expression .kanji-link {
@@ -358,7 +378,7 @@ button.action-button {
     display: block;
 }
 
-.tag-list>.tag:not(:last-child) {
+.tag-list>.tag {
     margin-right: 0.375em;
 }
 
@@ -505,7 +525,7 @@ button.action-button {
 }
 
 .term-definition-disambiguation-list:after {
-    content: " only)";
+    content: " only) ";
 }
 
 .term-definition-disambiguation+.term-definition-disambiguation:before {
diff --git a/ext/mixed/display-templates.html b/ext/mixed/display-templates.html
index fc0558a9..fed252a1 100644
--- a/ext/mixed/display-templates.html
+++ b/ext/mixed/display-templates.html
@@ -5,11 +5,11 @@
         <div class="entry-header2">
             <div class="entry-header3">
                 <div class="actions">
-                    <button class="action-button action-view-note pending disabled"><img src="/mixed/img/view-note.svg" class="icon-image" title="View added note (Alt + V)" alt></button>
-                    <button class="action-button action-add-note pending disabled" data-mode="term-kanji"><img src="/mixed/img/add-term-kanji.svg" class="icon-image" title="Add expression (Alt + E)" alt></button>
-                    <button class="action-button action-add-note pending disabled" data-mode="term-kana"><img src="/mixed/img/add-term-kana.svg" class="icon-image" title="Add reading (Alt + R)" alt></button>
-                    <button class="action-button action-play-audio"><img src="/mixed/img/play-audio.svg" class="icon-image" title="Play audio (Alt + P)" alt></button>
-                    <span class="action-button action-current-indicator"><img src="/mixed/img/entry-current.svg" class="icon-image current" title="Current entry (Alt + Up/Down/Home/End/PgUp/PgDn)" alt></span>
+                    <button class="action-button action-view-note pending disabled" data-icon="view-note" title="View added note (Alt + V)"></button>
+                    <button class="action-button action-add-note pending disabled" data-icon="add-term-kanji" data-mode="term-kanji" title="Add expression (Alt + E)"></button>
+                    <button class="action-button action-add-note pending disabled" data-icon="add-term-kana" data-mode="term-kana" title="Add reading (Alt + R)"></button>
+                    <button class="action-button action-play-audio" data-icon="play-audio" title="Play audio (Alt + P)"></button>
+                    <span class="action-button action-current-indicator" data-icon="entry-current" title="Current entry (Alt + Up/Down/Home/End/PgUp/PgDn)"></span>
                 </div>
                 <div class="term-expression-list"></div>
             </div>
@@ -24,15 +24,11 @@
     <pre class="debug-info"></pre>
 </div></template>
 <template id="term-expression-template"><div class="term-expression"><span class="term-expression-text source-text"></span><div class="term-expression-details">
-    <button class="action-button action-play-audio"><img src="/mixed/img/play-audio.svg" class="icon-image" title="Play audio" alt></button>
+    <button class="action-button action-play-audio" data-icon="play-audio" title="Play audio"></button>
     <div class="tags tag-list"></div>
     <div class="frequencies tag-list"></div>
 </div></div></template>
-<template id="term-definition-item-template"><li class="term-definition-item">
-    <div class="term-definition-tag-list tag-list"></div>
-    <div class="term-definition-disambiguation-list"></div>
-    <ul class="term-glossary-list"></ul>
-</li></template>
+<template id="term-definition-item-template"><li class="term-definition-item"><div class="term-definition-tag-list tag-list"></div><div class="term-definition-disambiguation-list"></div><ul class="term-glossary-list"></ul></li></template>
 <template id="term-definition-disambiguation-template"><span class="term-definition-disambiguation"></span></template>
 <template id="term-glossary-item-template"><li class="term-glossary-item"><span class="term-glossary-separator"> </span><span class="term-glossary"></span></li></template>
 <template id="term-glossary-item-image-template"><li class="term-glossary-item" data-has-image="true"><span class="term-glossary-separator"> </span><span class="term-glossary"><a class="term-glossary-image-link" target="_blank" rel="noreferrer noopener"><span class="term-glossary-image-container"><span class="term-glossary-image-aspect-ratio-sizer"></span><img class="term-glossary-image" alt="" /><span class="term-glossary-image-container-overlay"></span></span><span class="term-glossary-image-link-text">Image</span></a> <span class="term-glossary-image-description"></span></span></li></template>
@@ -55,9 +51,9 @@
         <div class="entry-header2">
             <div class="entry-header3">
                 <div class="actions">
-                    <button class="action-button action-view-note pending disabled"><img src="/mixed/img/view-note.svg" class="icon-image" title="View added note (Alt + V)" alt></button>
-                    <button class="action-button action-add-note pending disabled" data-mode="kanji"><img src="/mixed/img/add-term-kanji.svg" class="icon-image" title="Add Kanji (Alt + K)" alt></button>
-                    <span class="action-button action-current-indicator"><img src="/mixed/img/entry-current.svg" class="icon-image current" title="Current entry (Alt + Up/Down/Home/End/PgUp/PgDn)" alt></span>
+                    <button class="action-button action-view-note pending disabled" data-icon="view-note" title="View added note (Alt + V)"></button>
+                    <button class="action-button action-add-note pending disabled" data-icon="add-term-kanji" data-mode="kanji" title="Add Kanji (Alt + K)"></button>
+                    <span class="action-button action-current-indicator" data-icon="entry-current" title="Current entry (Alt + Up/Down/Home/End/PgUp/PgDn)"></span>
                 </div>
                 <div class="kanji-glyph source-text"></div>
             </div>
@@ -92,7 +88,7 @@
 <template id="kanji-reading-template"><dd class="kanji-reading"></dd></template>
 
 <template id="tag-template"><span class="tag"><span class="tag-inner"></span></span></template>
-<template id="tag-frequency-template"><span class="tag" data-category="frequency"><span class="tag-inner"><span class="term-frequency-dictionary-name"></span><span class="term-frequency-separator"></span><span class="term-frequency-value"></span></span></template>
+<template id="tag-frequency-template"><span class="tag" data-category="frequency"><span class="tag-inner"><span class="term-frequency-dictionary-name"></span><span class="term-frequency-separator"></span><span class="term-frequency-value"></span></span></span></template>
 <template id="tag-search-template"><span class="tag" data-category="search"></span></template>
 
 </body></html>