body{
    background-color: var(--background-color);
}
.hidden__all{
    font-size: 40px;
    text-align: center;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width:80%;
}
.hidden__title{
    font-size: 200%;
    font-weight: bold;
}
.hidden__subtitle{
    font-size: 80%;
    padding: 20px;

}
@media screen and (max-width: 666px){
    .hidden__all{
        font-size: 20px;
    }
}