:root {
    --blanc: #ffffff;
    --noir: #000000;
    --bleu: #1784bf;
}
* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}
body,
html {
    position: relative;
    width: 100%;
    font-size: 16px;
    overflow-x: hidden !important;
}
html.disable-scroll {
    overflow-y: hidden;
}
body {
    font-family: "Poppins", sans-serif;
    background-image: url("../images/bg-numerica.jpg");
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center center;
}
body.nobg {
    background-image: none;
}
.background {
    position: relative;
    height: 100vh;
    width: 100%;
    padding: 0;
    margin: 0px;
}

header {
    display: flex;
    align-items: center;
    justify-content: center;
}
header .logo {
    text-align: center;
}
header .logo img {
    width: 80%;
    max-width: 800px;
    height: auto;
    margin-top: 100px;
}
body.nobg header .logo img {
    margin-top: 30px;
    margin-bottom: 15px;
}
.retour {
    font-size: 0.9em;
}
h1 {
    color: var(--blanc);
    margin-top: 100px;
    margin-bottom: 50px;
    font-weight: normal;
}
hr {
    border: 0;
    border-bottom: 1px solid var(--blanc);
}
p {
    color: var(--blanc);
    margin: 20px 0;
}
h2 {
    color: var(--blanc);
    margin: 40px 0 20px 0;
}
a {
    color: var(--blanc);
    text-decoration: none;
    cursor: pointer;
}

a:hover {
    text-decoration: underline;
}
ul {
    color: var(--blanc);
    list-style-position: inside;
}
.contenu {
    text-align: center;
    max-width: 80%;
    margin: 0 auto;
    line-height: 1.4em;
}
body.nobg p,
body.nobg a,
body.nobg h1,
body.nobg h2 {
    color: var(--noir);
}

body.nobg h1 {
    margin-top: 30px;
}
body.nobg .contenu {
    text-align: left;
}
.footer-link {
    margin-top: 50px;
    font-size: 14px;
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-direction: column;
    padding-bottom: 50px;
}

@media only screen and (min-width: 768px) {
    .footer-link {
        flex-direction: row;
        gap: 50px;
    }

    header .logo img {
        margin-top: 150px;
    }
}