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<html><head><style>.center { margin: auto; width: 60%; border: 3px solid #73AD21; padding: 10px;}</style></head><body><h2>Center Align Elements</h2><p>To horizontally center a block element (like div), use margin: auto;</p><div class="center"> <p>Hello World!</p></div></body><!-- Mirrored from www.w3schools.com/css/tryit.asp?filename=trycss_align_container by HTTrack Website Copier/3.x [XR&CO'2014], Wed, 21 Dec 2022 16:49:10 GMT --></html>