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self.$el.dialog('destroy');
 self.$el.dialog({
 height:285,
 width: 628,
 modal: true,
 title: 'Import Table',
 buttons: myButtons
 });
 

Another item

 h1 {
margin-left: 20px;
}
.tableSection {
margin: 20px;
padding: 4px 16px;
}