body{
    text-align: center;
}
div{
    height: 200px;
    width: 400px;
    border: 1px solid black;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: auto;
    font-size: 20px;
}
button{
    height: 80px;
    width: 180px;
    font-size: 20px;
}