.submitstart {
    padding:5px 15px; 
    background:#0f0; 
    width:800px;
    height:500px;
    border:0 none;
    cursor:pointer;
    -webkit-border-radius: 5px;
    border-radius: 5px; 
    font-size: 10em;
    font-weight: bold;
}



.submitende {
    padding:5px 15px; 
    background:#f00; 
    width:800px;
    height:500px;
    border:0 none;
    cursor:pointer;
    -webkit-border-radius: 5px;
    border-radius: 5px; 
    font-size: 10em;
    font-weight: bold;
}