updating maxcdn icon, tweaking responsive icon carousel

src/assets/less/site/responsive/screen-lg.less

@@ -8,9 +8,9 @@
       .square(30px);
       font-size: 40px;
       line-height: 35px;
-      left: 370/2 - 40px;
+      left: 370/2 - 45px;
       &.right {
-        right: 370/2 - 40px;
+        right: 370/2 - 45px;
       }
     }
   }

src/assets/less/site/responsive/screen-sm.less

@@ -4,10 +4,8 @@
     font-size: @size;
     line-height: @size + 5;
     .carousel-control {
-      top: @size + 30px;
+      top: @size + 10px;
       .square(30px);
-      font-size: 40px;
-      line-height: 40px;
       left: 228/2 - 40px;
       &.right {
         right: 228/2 - 40px;

src/assets/less/site/responsive/screen-xs.less

@@ -6,7 +6,7 @@
     width: 280px;
     margin: 30px auto 0;
     .carousel-control {
-      top: @size / 2;
+      top: 37%;
       .square(44px);
       font-size: 44px;
       line-height: 44px;