.menu {
    position: absolute;
    top: 0;
    left: 0;
    background: black;
    width: 100%;
    height: 100%;
    z-index: 999;
    opacity: 0;
    transition: .3s;
    display: none;
}
.challenges {
    display: inline-block;
    font-size: 4vh;
}
.cardHelper {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    display: table;
}
.cardUl {
    font-size: min(2.5vh,2vw);
    display: table-cell;
    vertical-align: middle;
}
#mapCard, #playerCard {
    opacity: 0;
    transition: .3s;
}
#mapCard {
    transform: translate(0, -20%);
}
.cards {
    transition: .3s;
}
.flag_block {
    position: absolute;
    top: 0px;
    left: 0px;
}
.flag {
    width: 50px;
    height: 50px;
    cursor: pointer;
    padding: 10px;
}
@media (max-width: 780px) {
    .flag_block {
        position: static!important;
    }
}