canvas{max-width: 100%; height: auto;}          

#user_answer_id{
    position: absolute;
    background-color:#fff;
    border-radius: 9px;
    color:#000;    
    font: bold 18px arial, Georgia, serif;
    text-align: center;    
     left: 298px;
    top: 294px;
    width: 71px;
    height:34px;
    border: 1px solid #B36611;
}