Make Mailchimp subscription form consistent with rest of the theme

Fix #49

RELEASE_NOTES.md

@@ -4,6 +4,7 @@ Version 1.4 (under development)
 * New: Support for `custom.css` 
 * New: Link to social profiles
 * New: Support for [Font Awesome](http://fortawesome.github.io/)
+* Email newsletter subscriber form style matches rest of the theme
 * Article images have a visible border
 * Block quotes have a quote icon instead of a thick line on left
 * Article's content font size is bigger, for better readability

static/css/elegant.css

@@ -350,10 +350,23 @@ ul.top-menu li a {
 
 #mc_embed_signup input.email {
     width:100%;
+    font-size: 0.9em;
 }
 
 #mc_embed_signup .button {
-    font-size: 1.1em;
+    font-size: 1em;
+    font-weight: normal;
+    color: black;
+    background-color: #EEEEEE;
+    border: 1px solid lightgray;
+}
+
+#mc_embed_signup .button:hover {
+    background-color: #DFDFDF;
+}
+
+#mc_embed_signup input[type="email"] {
+    height: 100%;
 }
 
 /* front page */