diff --git a/index.html b/index.html
index e4f1b50..7d4ed5c 100644
--- a/index.html
+++ b/index.html
@@ -122,14 +122,14 @@
           </div>
           <div class="pure-u-1 pure-u-md-1-4">
             <label for="splitPoints">
-              分割地点
+              分割地点 [km]
             </label>
             <input id="splitPoints" class="pure-u-23-24" type="text" placeholder="50,100,150"
               pattern="^([0-9]+(\.[0-9]+)?)(( *, *)([0-9]+(\.[0-9]+)?))*$" />
           </div>
           <div class="pure-u-1">
-            <div class="pure-u-1 pure-u-md-1-8">
-              <button id="download-button" class="pure-u-23-24 pure-button pure-button-primary">
+            <div class="pure-u-1-4">
+              <button id="download-button" class="pure-button pure-button-primary">
                 画像をダウンロードする
               </button>
               <a id="hidden-download-link" target="_blank" href="data:image/png;base64,Can+you+see+me"></a>
diff --git a/style.css b/style.css
index 53feb42..adc94af 100644
--- a/style.css
+++ b/style.css
@@ -42,15 +42,6 @@ footer a {
     border-color: #e9322d;
 }
 
-input + .pure-form-message.message-for-invalid-input {
-    display: none;
-}
-
-input:invalid + .pure-form-message.message-for-invalid-input {
-    display: unset;
-    color: #b94a48;
-}
-
 #download-button {
     margin: 0.5em 0;
 }
\ No newline at end of file