Revert rollup button style change

This turned out to be more disruptive for the rollup happy path usages.

Author: jieyouxu

homu/html/queue.html

@@ -122,25 +122,6 @@
                 color: #00f;
             }
 
-            /* Make the rollup button vs sync button clear distinct, because sync requires some elaborate procedure. */
-            button#expand-rollup {
-                background-color: darkcyan;
-                border: 2px solid #000000;
-                border-radius: 4px;
-                box-shadow: rgba(0, 0, 0, .1) 0 2px 4px 0;
-                box-sizing: border-box;
-                color: #fff;
-                font-size: 16px;
-                font-weight: 400;
-                padding: 10px 25px;
-                text-align: center;
-            }
-
-            button#expand-rollup:hover {
-                box-shadow: rgba(0, 0, 0, .15) 0 3px 9px 0;
-                transform: translateY(-2px);
-            }
-
             button#synch {
                 background-color: red;
                 border: 2px solid #000000;