iframe{
    width: 90%;
    height: 400px;
    margin-left: 100px;
}

.quiz_ago14{
    background-color: rgba(143, 188, 143, 0.649);
    width: 30%;
    text-align: center;
    padding: 5px 0;
    margin-top: 15px;
    border-radius: 20px;
}