src/main/resources/res/ui/script-console.css - sling-org-apache-sling-scripting-console - Git at Google

 .CodeMirror {
     /*border-top: 1px solid black;*/
     border-bottom: 1px solid black;
 }
	.CodeMirror {
	/border-top: 1px solid black;/
	border-bottom: 1px solid black;
	}