.boutonscontact
{
    font-size: large;
    font-family: "Trebuchet MS";
    background-color: #99CDFF;
    text-align: center;
}


.centerImg
{
    text-align: center;
}

.overlay {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100%;
    width: 100%;
    opacity: 0;
    transition: .5s ease;
    background-color: #98CA06;
}

.container:hover .overlay {
    opacity: 1;
}

.text {
    font-family: "Trebuchet MS";
    color: white;
    font-size: 15px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
}

.image {
    display: block;
    width: 100%;
    height: auto;
}

.container {
    position: relative;
    width: 100%;
}

<!-- la barre de progression-->

label {
    padding-right: 10px;
    font-size: 1rem;
}


div.textarea {
    float: left;
    margin-left: 5%;
    margin-top: 3px;
}

div.ancres {
    float: left;
    margin-left: 2%;
}


div.pages {
    position: fixed;
    margin-top: 5%;
    border: solid 1px  ;
    margin-left: 1%;
    font-family: Verdana, sans-serif;
    font-size: medium;
    width: 100px;
    height: 200px;
    color: black;
    background-color: #E1E2E3;
}

.toolbar{
    position: fixed;
    margin-top: 20%;
    border: 1px solid ;
    margin-left: 1%;
    width: 100px;
    height: 295px;

}

div.CM{
    width: 680px;
    height: 500px;
    position: fixed;
    top: 12%;
    left: 55%;
}



a  {
    font-family: Arial, Verdana, sans-serif;
    color: black ;
}
h3 {
    font-size: large;
}
input [type=text]{
    font-size: larger;
}
h2 {
    font-size: x-large;
    text-align: center;
}

.hautPage {
    color: black;
}

.critere {
    font-size: 14px;
    margin-left: 10px;
    font-family: "Trebuchet MS";
    margin-left: 8%;
}

.critereTitre {
    font-size: large;
    margin-top: 0%;
    margin-left: 20px;
    font-family: "Trebuchet MS";

}



.ariane {
    width: 115px;
    font-size: medium;
    background-color: #DFE6E5;
    height: 20px;
    text-align: center;
    padding-top: 20px;
    font-style: unset;
}

.arianeAide {
    width: 1280px;
    font-size: medium;
    background-color: #DFE6E5;
    height: 20px;
    text-align: right;
    padding-top: 20px;
    padding-right: 15px;
    font-style: unset;
}

.arianeConsigne {
    padding: 10px;
    padding-left: 5px;
    width: 500px;
    background-color: #DFE6E5;
    padding-top: 20px;

}

.arianeEval {
    width: 400px;
    background-color: #DFE6E5;

}

.consigne {
    margin-left: 15%;
    width: 405px;
}
.transparent {
    opacity: 0;
}


.un{
    color: #F5B629;
    padding: 5% 10%;
}

.deux{
    color: #51A6E4;
    padding: 5% 7%;
}

.trois{
    color: #2FB33C;
    padding: 5% 7%;
}
.quatre{
    color: #CE63CC;
    padding: 5% 7%;
}

.chrono {
    width: 400px;
}