make css more robust when including in site with existing styles

ipick.js

@@ -17,12 +17,10 @@
           transparent 98%
         );
     }
-
     #ipick-button img {
       width: 10.9375em;
       height: 7.8125em;
     }
-
     .ipick-menu {
       position: fixed;
       bottom: 0;
@@ -34,17 +32,31 @@
       background-color: #222;
       z-index: 1000;
     }
-
     .ipick-menu ul {
       bottom: 200px;
       position: absolute;
+      padding: 0em 4em;
+      margin: auto;
+      line-height: normal;
+    }
+    .ipick-menu ul li {
+      list-style: none;
+      padding: 0px;
+      margin: auto;
+      line-height: normal;
     }
-
     .ipick-menu ul li a {
       color: green;
       font-size: 20pt;
+      border: none;
+      padding: 0px;
+      margin: 0px;
+      line-height: normal;
+    }
+    .ipick-menu ul li a:hover {
+      border: none;
+      text-decoration: underline;
     }
-
     .ipick-open .ipick-menu {
       max-width: 18.75em;
     }