diff --git a/package-lock.json b/package-lock.json
index 64fcb39..902ab0d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2767,6 +2767,15 @@
       "integrity": "sha1-+Xj6TJDR3+f/LWvtoqUV5xO9z0o=",
       "dev": true
     },
+    "get-npm-tarball-url": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/get-npm-tarball-url/-/get-npm-tarball-url-2.0.1.tgz",
+      "integrity": "sha512-POrVRGyS9X5w+855/H46JGVYBGuVgJXyIkbsTCzW+sv5x2qH+rfQjc7652DzkgOskF+cqLevA2En7V0hu0gZCg==",
+      "dev": true,
+      "requires": {
+        "normalize-registry-url": "^1.0.0"
+      }
+    },
     "get-stream": {
       "version": "4.1.0",
       "resolved": "https://registry.npmjs.org/get-stream/-/get-stream-4.1.0.tgz",
@@ -3925,6 +3934,34 @@
         "to-regex": "^3.0.1"
       }
     },
+    "needle": {
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/needle/-/needle-2.3.2.tgz",
+      "integrity": "sha512-DUzITvPVDUy6vczKKYTnWc/pBZ0EnjMJnQ3y+Jo5zfKFimJs7S3HFCxCRZYB9FUZcrzUQr3WsmvZgddMEIZv6w==",
+      "dev": true,
+      "requires": {
+        "debug": "^3.2.6",
+        "iconv-lite": "^0.4.4",
+        "sax": "^1.2.4"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "3.2.6",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-3.2.6.tgz",
+          "integrity": "sha512-mel+jf7nrtEl5Pn1Qx46zARXKDpBbvzezse7p7LqINmdoIk8PYP5SySaxEmYv6TZ0JyEKA1hsCId6DIhgITtWQ==",
+          "dev": true,
+          "requires": {
+            "ms": "^2.1.1"
+          }
+        },
+        "ms": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+          "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==",
+          "dev": true
+        }
+      }
+    },
     "negotiator": {
       "version": "0.6.2",
       "resolved": "https://registry.npmjs.org/negotiator/-/negotiator-0.6.2.tgz",
@@ -4013,6 +4050,12 @@
       "integrity": "sha1-Dc1p/yOhybEf0JeDFmRKA4ghamU=",
       "dev": true
     },
+    "normalize-registry-url": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/normalize-registry-url/-/normalize-registry-url-1.0.0.tgz",
+      "integrity": "sha512-0v6T4851b72ykk5zEtFoN4QX/Fqyk7pouIj9xZyAvAe9jlDhAwT4z6FlwsoQCHjeuK2EGUoAwy/F4y4B1uZq9A==",
+      "dev": true
+    },
     "npm-run-path": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/npm-run-path/-/npm-run-path-2.0.2.tgz",
@@ -4857,6 +4900,12 @@
       "integrity": "sha1-RPoWGwGHuVSd2Eu5GAL5vYOFzWo=",
       "dev": true
     },
+    "sax": {
+      "version": "1.2.4",
+      "resolved": "https://registry.npmjs.org/sax/-/sax-1.2.4.tgz",
+      "integrity": "sha512-NqVDv9TpANUjFm0N8uM5GxL36UgKi9/atZw+x7YFnQ8ckwFGKrl4xX4yWtrey3UJm5nP1kUbnYgLopqWNSRhWw==",
+      "dev": true
+    },
     "schema-utils": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/schema-utils/-/schema-utils-1.0.0.tgz",
@@ -5258,6 +5307,37 @@
       "integrity": "sha1-PpNdfd1zYxuXZZlW1VEo6HtQhKM=",
       "dev": true
     },
+    "spdx-exceptions": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/spdx-exceptions/-/spdx-exceptions-2.2.0.tgz",
+      "integrity": "sha512-2XQACfElKi9SlVb1CYadKDXvoajPgBVPn/gOQLrTvHdElaVhr7ZEbqJaRnJLVNeaI4cMEAgVCeBMKF6MWRDCRA==",
+      "dev": true
+    },
+    "spdx-expression-parse": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/spdx-expression-parse/-/spdx-expression-parse-3.0.0.tgz",
+      "integrity": "sha512-Yg6D3XpRD4kkOmTpdgbUiEJFKghJH03fiC1OPll5h/0sO6neh2jqRDVHOQ4o/LMea0tgCkbMgea5ip/e+MkWyg==",
+      "dev": true,
+      "requires": {
+        "spdx-exceptions": "^2.1.0",
+        "spdx-license-ids": "^3.0.0"
+      }
+    },
+    "spdx-expression-validate": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/spdx-expression-validate/-/spdx-expression-validate-2.0.0.tgz",
+      "integrity": "sha512-b3wydZLM+Tc6CFvaRDBOF9d76oGIHNCLYFeHbftFXUWjnfZWganmDmvtM5sm1cRwJc/VDBMLyGGrsLFd1vOxbg==",
+      "dev": true,
+      "requires": {
+        "spdx-expression-parse": "^3.0.0"
+      }
+    },
+    "spdx-license-ids": {
+      "version": "3.0.5",
+      "resolved": "https://registry.npmjs.org/spdx-license-ids/-/spdx-license-ids-3.0.5.tgz",
+      "integrity": "sha512-J+FWzZoynJEXGphVIS+XEh3kFSjZX/1i9gFBaWQcB+/tmpe2qUsSBABpcxqxnAxFdiUFEgAX1bjYGQvIZmoz9Q==",
+      "dev": true
+    },
     "spdy": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/spdy/-/spdy-4.0.0.tgz",
@@ -5414,6 +5494,16 @@
       "integrity": "sha512-AiisoFqQ0vbGcZgQPY1cdP2I76glaVA/RauYR4G4thNFgkTqr90yXTo4LYX60Jl+sIlPNHHdGSwo01AvbKUSVQ==",
       "dev": true
     },
+    "string-replace-loader": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/string-replace-loader/-/string-replace-loader-2.2.0.tgz",
+      "integrity": "sha512-Ukt4ZC8+xVWdBRut3/iwnPJCNL1yV8AbVKXn8UcWdYrHgtuW4UDDAbBSi/J/CQDEWQBt824AJvPYahF23eJLRg==",
+      "dev": true,
+      "requires": {
+        "loader-utils": "^1.2.3",
+        "schema-utils": "^1.0.0"
+      }
+    },
     "string-width": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",
@@ -6125,6 +6215,20 @@
         }
       }
     },
+    "webpack-license-plugin": {
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/webpack-license-plugin/-/webpack-license-plugin-4.1.1.tgz",
+      "integrity": "sha512-CYqPx4f8e7thGIrv5aruoUAF8sTw94o3dGhZbALc4szYIjdQPGLO3lCB/YLUj7UaI+JJeuboVz0lu3QPx5k+ZA==",
+      "dev": true,
+      "requires": {
+        "chalk": "^2.4.1",
+        "get-npm-tarball-url": "^2.0.1",
+        "lodash": "^4.17.10",
+        "needle": "^2.2.4",
+        "spdx-expression-validate": "^2.0.0",
+        "webpack-sources": "^1.3.0"
+      }
+    },
     "webpack-log": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/webpack-log/-/webpack-log-2.0.0.tgz",
diff --git a/package.json b/package.json
index bba21b4..2819806 100644
--- a/package.json
+++ b/package.json
@@ -20,6 +20,7 @@
     "idb-keyval": "^3.2.0",
     "reset-css": "^5.0.1",
     "serviceworker-webpack-plugin": "^1.0.1",
+    "string-replace-loader": "^2.2.0",
     "style-loader": "^1.1.3",
     "svelte": "^3.4.1",
     "svelte-loader": "^2.13.4",
@@ -27,6 +28,7 @@
     "webpack": "^4.31.0",
     "webpack-cli": "^3.3.2",
     "webpack-dev-server": "^3.4.1",
+    "webpack-license-plugin": "^4.1.1",
     "webpack-merge": "^4.2.2",
     "workbox-cacheable-response": "^5.0.0",
     "workbox-expiration": "^5.0.0",
diff --git a/src/ncounter/About.svelte b/src/ncounter/About.svelte
new file mode 100644
index 0000000..1ce605f
--- /dev/null
+++ b/src/ncounter/About.svelte
@@ -0,0 +1,64 @@
+<div class="about">
+    <button class="close" on:click={ () => { dispatch('close'); } }><i class="material-icons">close</i></button>
+    <header>
+        <h1>NCounter</h1>
+        <h2>Release |BUILD_DATE|</h2>
+        <h2>&copy; |BUILD_YEAR|</h2>
+    </header>
+    <div class="licenses">
+        <h2>Open Source License Information</h2>
+        <Licenses></Licenses>
+    </div>
+</div>
+<script>
+import Licenses from './Licenses.svelte';
+import { createEventDispatcher } from 'svelte';
+const dispatch = createEventDispatcher();
+</script>
+<style>
+.about {
+    background-color: white;
+    position: fixed;
+    top: 0;
+    right: 0;
+    bottom: 0;
+    left: 0;
+    z-index: 3;
+
+    display: flex;
+    flex-direction: column;
+    align-items: stretch;
+
+    overflow: auto;
+
+    padding: 5px;
+}
+
+.about > header {
+    flex: center;
+    text-align: center;
+}
+
+h1 {
+    font-weight: 600;
+    font-size: 24px;
+}
+
+h2 {
+    font-size: 18px;
+}
+
+.licenses h2{
+    font-weight: 600;
+}
+
+.close {
+    position: absolute;
+    top: 15px;
+    right: 15px;
+}
+
+.licenses {
+    margin-top: 32px;
+}
+</style>
\ No newline at end of file
diff --git a/src/ncounter/App.svelte b/src/ncounter/App.svelte
index 05ab6a1..410ae76 100644
--- a/src/ncounter/App.svelte
+++ b/src/ncounter/App.svelte
@@ -1,27 +1,36 @@
 <div class="app">
-<button class="add" on:click="{ showAdd }"><i class="material-icons">add</i></button>
-{#each $counters as counter}
-<Counter counterId={ counter.id }></Counter>
-{/each}
+    <div class="counter-list">
+        {#each $counters as counter}
+        <Counter counterId={ counter.id }></Counter>
+        {/each}
+    </div>
+    <div class="tool-bar">
+        <button class="add" on:click="{ showAdd }"><i class="material-icons">add</i></button>
+        <button class="about" on:click="{ () => { showAbout = true; } }">?</button>
+    </div>
 </div>
 {#if showAddDialog}
 <div class="dialog">
     <div class="dialog-content">
-        <label>Name: <input type="text" bind:value={newCounter.title} use:focus/></label>
-        <label>Initial Value: <input type="number" bind:value={newCounter.initialValue} /></label>
-        <label>Target: <input type="number" bind:value={newCounter.max} /></label>
-        <label>Save history: <input type="checkbox" bind:checked={newCounter.saveHistory} /></label>
+        <label>Name<input type="text" bind:value={newCounter.title} use:focus/></label>
+        <label>Initial Value<input type="number" bind:value={newCounter.initialValue} /></label>
+        <label>Target<input type="number" bind:value={newCounter.max} /></label>
+        <label>Save history<input type="checkbox" bind:checked={newCounter.saveHistory} /></label>
         <button on:click={ () => { showAddDialog = false; } }>Cancel</button>
         <button class="ok" on:click={ add }>OK</button>
     </div>
 </div>
 {/if}
+{#if showAbout}
+<About on:close="{ () => { showAbout = false; } }"></About>
+{/if}
 <script>
+import About from './About.svelte';
 import Counter from './Counter.svelte';
 import { counters } from './db.js';
 
 let showAddDialog = false;
-
+let showAbout = false;
 let newCounter = null;
 
 function focus(node){
@@ -50,34 +59,16 @@ function add(){
     showAddDialog = false;
 }
 </script>
-<style>
-    .add {
-        display: flex;
-        align-items: center;
-        justify-content: center;
-
-        position: fixed;
-        bottom: 15px;
-        right: 15px;
-
-        z-index: 2;
-
-        background-color: #90C090;
-        border-radius: 50%;
-    
-        box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
-
-        width: 40px;
-        height: 40px;
-        color: white;
-    }
-
+<style lang="scss">
     .ok {
         margin-left: auto;
     }
 
     .app {
-        padding: 5px;
+        display: flex;
+        flex-direction: column;
+        align-items: stretch;
+
         position: fixed;
         top: 0;
         right: 0;
@@ -85,7 +76,35 @@ function add(){
         left: 0;
 
         z-index: 1;
+    }
 
+    .counter-list {
+        padding: 5px;
         overflow: auto;
+        flex: 1 0 0;
+
+        background-color: #8baec6;
+    }
+
+    .tool-bar {
+        flex: none;
+
+        display: flex;
+
+        border-top: 2px solid #3A86B7;
+    }
+
+    .tool-bar > button {
+        background-color: #3A86B7;
+        color: white;
+    }
+
+    .tool-bar > button:focus, .tool-bar > button:hover {
+        border: 2px solid #303030;
+    }
+
+    .about {
+        margin-left: auto;
+        font-size: 20px;
     }
 </style>
\ No newline at end of file
diff --git a/src/ncounter/Counter.svelte b/src/ncounter/Counter.svelte
index 1cb51c9..d0852dc 100644
--- a/src/ncounter/Counter.svelte
+++ b/src/ncounter/Counter.svelte
@@ -27,10 +27,10 @@
     {#if showEditDialog}
     <div class="dialog">
         <div class="dialog-content">
-            <label>Name: <input type="text" bind:value={editingCounter.title} use:focus/></label>
-            <label>Initial Value: <input type="number" bind:value={editingCounter.initialValue} /></label>
-            <label>Target: <input type="number" bind:value={editingCounter.max} /></label>
-            <label>Save history: <input type="checkbox" bind:checked={editingCounter.saveHistory} /></label>
+            <label>Name<input type="text" bind:value={editingCounter.title} use:focus/></label>
+            <label>Initial Value<input type="number" bind:value={editingCounter.initialValue} /></label>
+            <label>Target<input type="number" bind:value={editingCounter.max} /></label>
+            <label>Save history<input type="checkbox" bind:checked={editingCounter.saveHistory} /></label>
             <button on:click={ () => { showEditDialog = false; } }>Cancel</button>
             <button class="ok" on:click={ finishEdit }>OK</button>
         </div>
@@ -122,7 +122,10 @@ function remove(){
 <style>
 .counter{
     box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
-    margin-bottom: 12px;
+
+    background-color: #FCFCFC;
+
+    margin-bottom: 4px;
 
     display: flex;
     flex-direction: column;
@@ -130,10 +133,6 @@ function remove(){
     padding: 5px;
 }
 
-.counter:last-child {
-    margin-bottom: 72px;
-}
-
 .controls {
     display: flex;
 }
@@ -151,7 +150,7 @@ header {
 }
 
 .reset {
-    margin-left: 24px;
+    margin-left: 12px;
 }
 
 .reset + button {
@@ -159,7 +158,7 @@ header {
 }
 
 .history {
-    margin-right: 24px;
+    margin-right: 12px;
 }
 
 .dialog-value {
diff --git a/src/ncounter/History.svelte b/src/ncounter/History.svelte
index 457ca11..4e42337 100644
--- a/src/ncounter/History.svelte
+++ b/src/ncounter/History.svelte
@@ -107,8 +107,6 @@ function close(){
         display: flex;
         flex-direction: column;
         align-items: stretch;
-
-        overflow: auto;
     }
 
     header {
@@ -124,6 +122,8 @@ function close(){
 
     .table-container {
         position: relative;
+
+        overflow: auto;
     }
 
     .close {
diff --git a/src/ncounter/Licenses.svelte b/src/ncounter/Licenses.svelte
new file mode 100644
index 0000000..bb95f8c
--- /dev/null
+++ b/src/ncounter/Licenses.svelte
@@ -0,0 +1,39 @@
+<div>
+    {#each licenses as license}
+    <header>
+        <h1>{license.name} by {license.author}</h1>
+        <div>Source: <a href="{license.repository}" target="_blank">{license.repository}</a></div>
+    </header>
+    <pre>{license.licenseText}</pre>
+    {/each}
+    {#if !licenses}
+    <progress></progress>
+    {/if}
+</div>
+<script>
+let licenses = [];
+
+(async () => {
+    licenses = await fetch('oss-licenses.json')
+                        .then(response => {
+                            if(response.ok)
+                                return response.json();
+                        });
+})();
+</script>
+<style>
+header {
+    margin-top: 12px;
+}
+
+header h1 {
+    font-weight: 600;
+}
+
+pre {
+    margin: 5px;
+    padding: 5px;
+    white-space: pre-wrap;
+    background-color: #F0F0F0;
+}
+</style>
\ No newline at end of file
diff --git a/src/ncounter/site.css b/src/ncounter/site.css
index 1521431..862984f 100644
--- a/src/ncounter/site.css
+++ b/src/ncounter/site.css
@@ -25,7 +25,21 @@ body {
 button {
     background: 0;
     border: 0;
+    
+    width: 36px;
     height: 36px;
+
+    display: flex;
+    align-items: center;
+    justify-content: center;
+
+    cursor: pointer;
+    
+    font-family: inherit;
+}
+
+button:focus, button:hover {
+    border: 2px solid #3A86B7;
 }
 
 .dialog {
@@ -47,14 +61,13 @@ button {
 }
 
 .dialog-content {
-    background-color: #E0E0E0;
+    background-color: #FCFCFC;
     pointer-events: all;
 
-    width: 300px;
+    width: 315px;
 
-    border-radius: 5px;
     box-shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
-    padding: 5px;
+    padding: 10px;
 
     display: flex;
     flex-wrap: wrap;
@@ -64,16 +77,30 @@ button {
     display: flex;
     width: 100%;
     margin-bottom: 5px;
+    align-items: center;
+    height: 26px;
+    font-weight: 600;
 }
 
 .dialog-content > label > input {
     margin-left: auto;
 }
 
+.dialog-content input[type='text'], .dialog-content input[type='number'] {
+    width: 175px;
+}
+
 .dialog-content button {
     padding: 10px;
     font-size: 14px;
     font-weight: 600;
+
+    width: auto;
+}
+
+.dialog-content button:focus, .dialog-content button:hover {
+    border: 0;
+    outline: 2px solid #3A86B7;
 }
 
 input[type="text"],
diff --git a/webpack.common.js b/webpack.common.js
index 16553f5..174f4d2 100644
--- a/webpack.common.js
+++ b/webpack.common.js
@@ -3,6 +3,7 @@ const HtmlWebpackPlugin = require('html-webpack-plugin');
 const GoogleFontsPlugin = require('@beyonk/google-fonts-webpack-plugin');
 const { CleanWebpackPlugin } = require('clean-webpack-plugin');
 const ServiceWorkerWebpackPlugin = require('serviceworker-webpack-plugin');
+const LicensePlugin = require('webpack-license-plugin');
 
 module.exports = {
     entry: './src/index.js',
@@ -21,7 +22,8 @@ module.exports = {
         new ServiceWorkerWebpackPlugin({
             entry: path.join(__dirname, 'src/sw.js'),
             publicPath: './'
-        })
+        }),
+        new LicensePlugin()
     ],
     output: {
         filename: 'index.js',
@@ -32,7 +34,18 @@ module.exports = {
             {
                 test: /\.svelte$/,
                 exclude: /node_modules/,
-                loader: 'svelte-loader'
+                use: [
+                    'svelte-loader',
+                    {
+                        loader: 'string-replace-loader',
+                        options: {
+                            multiple: [
+                                { search: '|BUILD_YEAR|', replace: '2020' },
+                                { search: '|BUILD_DATE|', replace: '2020-02-28'}
+                            ]
+                        }
+                    }
+                ]
             },
             {
                 test: /\.css$/,