.hiddendiv {display: none; }
.TestA:focus ~ #testA {display: block; }
.TestB:focus ~ #testB {display: block; }

.dropshadow {filter: drop-shadow(5px 5px 10px #444141);}
.dropshadowbio1 {filter: drop-shadow(2px 2px 5px #646262);}
.dropshadowbio2 {filter: drop-shadow(2px 2px 5px #646262);}