#ins-wrap {
    position: absolute;
    height: 100%;
    width: 100%;
    background: #0000006e;
    font-size: 1.7rem;
    padding: 1.7rem;
    box-sizing: border-box;
    padding-top: 40%;
    color: #ffff1d;
    text-align: center;
}


#start_button {
    position: absolute;
    left: calc(50% - 75px);
    top: 55%;
    width: 150px;
    height: 76px;
    background-image: url(images/startbutton.png);
    background-size: cover;
    background-color: transparent;
    border: none
}



.overlayAll{
    font-family: Arial, Helvetica, sans-serif;
    font-weight: bold;
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #fff;
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

@media (orientation: landscape) and (max-height: 800px) {
    .overlayAll{
        display: flex;
    }
}

@media (max-width: 850px) {
    #ins-wrap{
        padding-top: 10px;
        font-size: 1.3rem;
    }
}