.button {
    padding: 1rem;
    margin: 0 auto;
    width: 80% ;
    background-color: coral;
    color: rgba(40, 40, 40, 0.308);
    border-bottom: 0.2rem solid rgba(40, 40, 40, 0.308);;
    cursor: pointer;
    transition: border ease-in-out 200ms;
    pointer-events: auto;
    transition-property: width, transform;
    transition-duration: 0.2s; 
    align-self: center;
    justify-self: center;
}

.button_selected {
    width: 100%;
    border-bottom: 0.2rem solid transparent;
    cursor: pointer;
    pointer-events: none;
    color: cornsilk;
}

.button:hover {
    border-bottom: 0.2rem solid rgb(80, 197, 64);
    color: cornsilk;
}

.button:active {
    transform: translateY(0.2rem);
    border-bottom: 0.2rem solid rgba(255, 255, 255, 0);
}

.challenge {
    background-color: cornflowerblue;
}

.challenge:hover {
    border-bottom: 0.2rem solid rgb(67, 225, 246);
}


#go_button {
    display: none;
    position: absolute;
    margin: auto;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    border-bottom: none;
    width: 9rem;
    height: 9rem;
    font-size: 3.5rem;
    background-color: rgb(71, 99, 255);
    color: cornsilk;
    padding: 0;
    padding-left: 0.4rem;
    animation: breath 1s ease-in-out infinite;
    z-index: 10;
}

@keyframes breath {
    0% {
        transform:scale(1);
    }
    50% {
        transform:scale(1.1);
        box-shadow: 0 19px 38px rgba(0,0,0,0.30), 0 15px 12px rgba(0,0,0,0.22);
    }
    100% {
        transform:scale(1);
        
    }
}


#reset {
    height: 70px;
    width: 120px;
    display: none;
    background-color: gray;
    border-bottom: 0.2rem solid rgb(71, 71, 71);
    grid-area: 5 / 1 / 6 / 2;
}

#restart {
    height: 70px;
    width: 120px;
    display: none;
    background-color: rgb(54, 160, 77);
    border-bottom: 0.2rem solid rgb(71, 71, 71);
    grid-area: 4 / 1 / 5 / 2;
}

#reset:hover {
    border-bottom: 0.2rem solid cornsilk;
}

#restart:hover {
    border-bottom: 0.2rem solid cornsilk;
}

#reset:active {
    border-bottom: 0.2rem solid transparent;
}

#restart:active {
    border-bottom: 0.2rem solid transparent;
}