body {
    background-color: grey;
}

#container {
    text-align: center;
    border: 7px solid grey;
    width: 1659px;
    height: 860px;
    padding-top: 0px;
}

#button1 {
    text-transform: uppercase;
    outline: 0;
    background: grey;
    width: 100%;
    height: 100%;
    border: 0;
    padding: 15px;
    color: #ffffff;
    font-size: 19px;
    cursor: pointer;
    border-radius: 10px;
}