body
{
    margin : 5%;
    border: 6px solid;
    border-color: #00AEAA;

    padding: 25px;
    text-align: center;
}

.sous_titre
{
    font-style: normal;
    font-size: 18px;
}

.type_observation
{
    margin-top: 150px;
}

.observation
{
    background-color: #00AEAA;
    margin: 20px;
    padding: 50px;
    border-radius: 20px;

    color: white;
    text-decoration: none;

    transition: transform .1s;
}

.observation:hover
{
    color: white;
    text-decoration: none;

    box-shadow: 0 8px 16px 0 rgba(0, 0, 0, 0.2), 0 12px 40px 0 rgba(0, 0, 0, 0.19);
    -ms-transform: scale(1.1); /* IE 9 */
    -webkit-transform: scale(1.1); /* Safari 3-8 */
    transform: scale(1.1);
}

.img_observation
{
    width: 100px;
}


.back
{
    text-align: right;
}



.div_explication
{
    margin-top: 50px;
    text-align: left;
}