diff --git a/assets/article-page.css b/assets/article-page.css
index 3a89f35..34d786d 100644
--- a/assets/article-page.css
+++ b/assets/article-page.css
@@ -4,20 +4,3 @@
 .mdc-typography--headline2, .mdc-typography--subtitle1, figure {
    margin: 5px;
 }
-
-.main-content {
-    margin-left: 15%;
-    margin-right: 15%;
-}
-@media screen and (max-width: 800px) {
-    .main-content {
-        margin-left:  5%;
-        margin-right: 5%;
-    }
-}
-@media screen and (max-width: 600px) {
-    .main-content {
-        margin-left:  2%;
-        margin-right: 2%;
-    }
-}
diff --git a/assets/global.css b/assets/global.css
index 61db766..ad6b4c6 100644
--- a/assets/global.css
+++ b/assets/global.css
@@ -36,7 +36,25 @@ footer {
     margin: 15px;
 }
 
+/* add side margins */
+.main-content {
+    margin-left: 15%;
+    margin-right: 15%;
+}
+@media screen and (max-width: 600px) {
+    .main-content {
+        margin-left:  5%;
+        margin-right: 5%;
+    }
+}
+@media screen and (max-width: 500px) {
+    .main-content {
+        margin-left:  2%;
+        margin-right: 2%;
+    }
+}
 
+/* for cookie notice */
 #cookies {
     display: none;
     width: 100%;
diff --git a/assets/mdc-card-list.css b/assets/mdc-card-list.css
index 7583161..46dcfc7 100644
--- a/assets/mdc-card-list.css
+++ b/assets/mdc-card-list.css
@@ -9,23 +9,6 @@
     margin: 0;
 }
 
-.main-content {
-    margin-left: 15%;
-    margin-right: 15%;
-}
-@media screen and (max-width: 600px) {
-    .main-content {
-        margin-left:  5%;
-        margin-right: 5%;
-    }
-}
-@media screen and (max-width: 500px) {
-    .main-content {
-        margin-left:  2%;
-        margin-right: 2%;
-    }
-}
-
 .main-content .mdc-card {
 	float:left;
 	clear:left;
diff --git a/authors/name/index.html b/authors/name/index.html
index 01cd7bf..a6208d3 100644
--- a/authors/name/index.html
+++ b/authors/name/index.html
@@ -66,7 +66,7 @@
             <main class="main-content" id="main-content">
                 <div class="mdc-top-app-bar--short-fixed-adjust">
                     <div class="mdc-card">
-                        <div class="mdc-card__media mdc-card__media--16-9" style="background-image:url('/images/article_name--cover.jpg/images/article_name--cover.jpg');"></div>
+                        <div class="mdc-card__media mdc-card__media--16-9" style="background-image:url('/images/article_name--cover.jpg');"></div>
                         <div class="mdc-card-content">
                             <h2 class="mdc-typography--headline6">Title</h2>
                             <h3 class="mdc-typography--subtitle2">