#tab2, #tab3 {position: fixed; }

.menu1 > a,
.menu1 #tab2:target ~ a:nth-of-type(1),
.menu1 #tab3:target ~ a:nth-of-type(1),
.menu1 > div {margin-top: 20px;color: antiquewhite!important;}

.menu1 > a { line-height: 28px;background: #2e2e2e;padding: 10px; text-decoration: none; text-transform: uppercase; color: antiquewhite; font-size: 16px;}

#tab2,
#tab3,
.menu1 > div,
.menu1 #tab2:target ~ div:nth-of-type(1),
.menu1 #tab3:target ~ div:nth-of-type(1) {display: none; }

.menu1 > div:nth-of-type(1),
.menu1 #tab2:target ~ div:nth-of-type(2),
.menu1 #tab3:target ~ div:nth-of-type(3) { display: block; }

.menu1 > a:nth-of-type(1),
.menu1 #tab2:target ~ a:nth-of-type(2),
.menu1 #tab3:target ~ a:nth-of-type(3) { }

div.conTab {padding-top: 10px;}