For this line:
<table border="1" id="sortable" cellpadding="5" style="width:600px;margin:0 auto;font-size:12px;border:3px groove #ccc">
Is this statement needed? Seems like it belongs in beginner mode, if at all.
"Note that the "border" shorthand property resets all border properties, including "border-image", to its initial value. Therefore, use the "border" shorthand, rather than other shorthands or the individual properties, to override any border settings earlier in the cascade. This will ensure that "border-image" has also been reset to allow the new styles to take effect. This message is displayed only once."


