.question{

    max-width:700px;
    margin:auto;
    text-align:center;

}

.question button{

    display:block;

    width:100%;

    margin:10px 0;

    padding:15px;

    font-size:18px;

    cursor:pointer;

}

.feedback{

    font-size:24px;

    font-weight:bold;

}

.explanation{

    display:block;

    margin-top:20px;

}