#t1, #t2 { border:3px solid black; width:400px; height:auto; margin:10px; padding:1px; text-align: center; }

.t1, .t2   {padding:6px;  }
.t1 :hover {padding: 4px; border:2px solid black;}

.t2 :hover {padding: 3px; border-top:3px solid #000; border-right:3px solid #777; border-bottom:3px solid #bbb ; border-left:3px solid #555 ; font-size:0.95em;}