.dropdown:hover .dropdown-menu {
    display: block;
    margin-top: 0;
}


body,
.backhead {
    background: whitesmoke;
}

.navbartaille {
    font-size: 25px;
}

.card {
    margin: 0 auto;
    float: none;
}

.tailleimg {
    width: auto;
    height: 100px;
}

.bordure {
    border-bottom: 1px solid orange;
}

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

.imgsize {
    width: 800px;
    height: auto;
}

.centre {
    text-align: center;
}

.justify {
    text-align: justify;
}

.gauche {
    text-align: start;
}

.width25 {
    width: 25%;
}

.tailleform {
    width: 40%;
    margin-left: 40px;
    margin-right: 40px;
}

.marginimage {
    margin-left: 50px;
}

.marginLegal {
    margin-left: 30%;
    margin-right: 30%;
    text-align: center;
}

#titreHome {
    height: 500px;
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url(image/imageMention.jpg);
    background-size: cover;
    background-position-y: center;

}

#titreAccueil {
    height: 500px;
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)),
        url(image/imageAccueil.jpg);
    background-size: cover;
    background-position-y: center;

}

#titreVTC {
    height: 500px;
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)),
        url(image/imageTitreVTC.jpg);
    background-size: cover;
    background-position-y: center;

}

#titreRent {
    height: 500px;
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)),
        url(image/imageTitreRent.jpg);
    background-size: cover;
    background-position-y: center;

}

.texttitle {
    color: white;
    margin: 300px;
}

@media screen and (width < 600px) {
    .navbartaille {
        font-size: 100%;
    }

    .tailleimg {
        width: auto;
        height: 50px;
    }

    .imgsize {
        margin-bottom: 20px;
        width: 100%;
        height: auto;
    }

    .d-flex {
        flex-flow: row wrap;
    }

    .width25 {
        margin: 10px;
        width: 100%;
    }

    .marginimage {
        margin-top: 10px;
        margin-left: 0px;
    }

    .marginLegal {
        margin-left: 10px;
        margin-right: 10px;
    }

    .tailleform {
        width: 95%;
        margin-left: 7px;
        margin-right: 7px;
    }

    #titreAccueil {
        height: 300px;
    }

    #titreVTC {
        height: 300px;
    }

    #titreRent {
        height: 300px;
    }

    #titreHome {
        height: 300px;
    }

    .texttitle {
        color: white;
        margin: 25px;
    }
}