body {
    margin: 40px;
    font-size: 1.2rem;
    text-align: justify;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background-color: whitesmoke;
}

header {
    padding: 10px;
    background-image: url(../images/26932399077_2168d7a527_b.jpg);
    color: dimgray;
    text-align: center;
    text-shadow: 3px 3px black;
}


div.transbox {
    margin: 10px;
    background-color: #ffffff;
    border: 1px solid grey;
    opacity: 0.7;
    filter: alpha(opacity=60);
}


main {
    margin-bottom: 20px;
}

.instructions-text {
    color: darkgreen;
}

.beau-bouton {
    background: #3498db;
    background-image: -webkit-linear-gradient(top, #3498db, #2980b9);
    background-image: -moz-linear-gradient(top, #3498db, #2980b9);
    background-image: -ms-linear-gradient(top, #3498db, #2980b9);
    background-image: -o-linear-gradient(top, #3498db, #2980b9);
    background-image: linear-gradient(to bottom, #3498db, #2980b9);
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    color: #ffffff;
    border: none;
    border-radius: 8px;
    margin-bottom: 4px;
    font-size: 1.2rem;
    width: 130px;
}

.container {
    height: 100%;
    width: 100%;
    margin: auto;
}

.first {
    float: left;
    height: 50px;
    width: 33%;
    height: 100%;
    background-color: lightgray;
}


.second {
    float: left;
    width: 33%;
    height: 100%;
    background-color: lightgray;
}

.third {
    float: left;
    width: 33%;
    height: 100%;
    background-color: lightgray;
}

.questionnaire {
    column-count: 2;
    margin: auto;
}

footer {
    background-color: white;
    padding: 15px;
    font-size: 10px;
    color: gray;

}