body {
    font-size: x-large; 
}

.larger {
    font-size: 150%;
}

#idFrage {
    padding: 0em 2em ; /*bottom top, left right */
    border: 1px solid black;
}
.spoilerShow + .spoilerContent {
    opacity : 0;
    transition: all ease-in 4s ;
}

.spoilerShow:hover + .spoilerContent {
    opacity : 1 ; 
}