.title-center {
    position: absolute; /* postulat de départ */
    top: 50%; left: 50%; /* à 50%/50% du parent référent */
    transform: translate(-50%, -50%); /* décalage de 50% de sa propre taille */
    text-align: center;
}

h1 {
    text-align:center;
}

.logo {
    text-align: center;
    margin-bottom: 50px;
}

.center-div
{
    margin: 0 auto;
    max-width: 700px;
    height: 100px;
    background-color: #ccc;
    border-radius: 3px;
}

html, body{
    font-family:"Thonburi" !important;
    font-size:16px;font-style:normal;
    -webkit-font-smoothing: antialiased;
    -webkit-text-stroke-width: 0.2px;
    -moz-osx-font-smoothing: grayscale;
    height: 100%;
}

@font-face{
    font-family: "Thonburi-Bold";
    src: url('Thonburi-Bold.ttf'),
    url('Thonburi-Bold.eot'); /* IE */
}

.container-efficience {
    margin-top: 90px;
    min-height: 80%;
}

.carousel{
    width: 100%;
    height: 60%;
}
.img-efficience {
    width: 80%;
    height: 600px;
}

.img-contact {
    border-radius:30px;
    height: 300px;
    width: 300px;
}

.img-projects {
    max-width: 70%;
    height: auto;
}

a {
    color: black;
    text-decoration:none
}

a:link {
    color: black;
}

/* visited link */
a:visited {
    color: black;
}

/* mouse over link */
a:hover {
    color: black;
}

/* selected link */
a:active {
    color: black;
}