Add next and previous arrows to blocks.

frontend/src/app/components/block/block.component.scss

@@ -44,6 +44,11 @@ h1 {
     float: left;
     margin-right: 10px;
   }
+  a {
+    &:hover, &:focus{
+      text-decoration: none;;
+    }
+  }
 }
 
 .address-link {
@@ -110,4 +115,29 @@ h1 {
       line-height: 1;
     }
   }
+}
+
+.grow {
+  flex-grow: 1;
+}
+
+.next-previous-blocks {
+  font-size: 36px;
+  display: inline-block;
+  vertical-align: bottom;
+
+  a {
+    color: #1ad8f4;
+    &:hover, &:focus {
+      color: #09a3ba;
+      display: inline-block;
+      // transform: scale(1.2);
+      // transition: 150ms all ease-in-out;
+    }
+  }
+}
+
+.disable {
+  font-size: 36px;
+  color: #393e5c73;
 }