Fixed some issues with the theme

theme/_sass/_variables.scss

@@ -8,5 +8,34 @@ $green: #28a745 !default;
 $primary: $green !default;
 
 img {
-    max-width: 100%;
+    display: block;
+    margin: 0 auto;
+    max-height: 80%;
+    max-width: 80%;
+}
+
+blockquote {
+    border-left:.25em solid #dfe2e5;
+    margin:0;
+    color: #6a737d;
+    padding:0 0 0 20px;
+    font-style:italic;
+  }
+
+.dropdown-menu>li>a {
+    display: block;
+    padding: 3px 20px;
+    clear: both;
+    font-weight: 400;
+    line-height: 1.42857143;
+    color: #333;
+    white-space: nowrap;
+}
+.dropdown-menu>li>a:hover{
+    background-color: #eee;
+}
+
+.nav>li>a:hover {
+    text-decoration: none;
+    background-color: #eee;
 }