Remove superfluous ampersand in selector

styles/components/markdown.css

@@ -2,11 +2,11 @@
   color: var(--color-gray-normal);
   font-size: 16px;
 
-  & p {
+  p {
     margin: 20px 0;
   }
 
-  & a {
+  a {
     color: var(--color-gray-normal);
     text-decoration: underline;
     &:hover {
@@ -14,34 +14,35 @@
     }
   }
 
-  & h1,
+  h1,
-  & h2,
+  h2,
-  & h3,
+  h3,
-  & h4,
+  h4,
-  & h5,
+  h5,
-  & h6 {
+  h6 {
     color: var(--color-gray-normal);
   }
 
-  & h1 {
+  h1 {
     font-size: 2em;
     margin: 1em 0;
     font-weight: 300;
   }
 
-  & h2 {
+  h2 {
     font-size: 1.5em;
     margin: 1em 0;
   }
 
-  & h3 {
+  h3 {
     font-size: 1.2em;
     margin: 1em 0;
   }
 
-  & img {
+  img {
     max-width: 100%;
     margin: 10 0 10 0;
   }
 
+
 }