body {
    font-family: sans-serif;
    margin: 0;
}

header {
    background-color: #2BB24C;
    padding: 1rem;
    margin-bottom: 2rem;
}

h1 {
    font-size: 400%;
    text-align: center;
    padding: 40px 0;
    color: white;
}

.tuto {
    max-width: 970px;
    margin: 0 auto 4% auto;
    padding: 0 2rem;
}

.chapo {
    font-size: 1.5rem;
    font-weight: 700;
}

.bouton {
    margin: 4rem 0 5rem 0;
    text-align: center;
}

.bouton a {
    font-size: 140%;
    color: white;
    text-decoration: none;
    background-color: #2BB24C;
    border-radius: 1rem;
    padding: 0.7rem 2rem;
}

.bouton-gris a {
    background-color: dimgrey;
}

.bouton a:hover {
    color: black;
    background-color: lightgrey;
}

h2 {
    font-size: 220%;
    border-bottom: solid 2px dimgrey;
}

p,
ol,
ul,
li {
    font-size: 1.4rem;
    line-height: 1.6;
}

ul li,
ol li {
    margin-left: 2rem;
}

ul,
ol {
    margin-bottom: 3rem;
}

a {
    font-weight: 700;
    text-decoration: none;
    color: dimgrey;
}

a:hover {
    color: black;
    text-decoration: underline;
}

.important {
    background-color: lightgrey;
    padding: 2rem 2rem 2rem 4rem;
    border-left: solid 10px dimgrey;
    margin: 1rem 0 5rem 0;
}

mark {
    padding: 0.3rem 0.8rem;
    background-color: dimgrey;
    color: white;
    font-weight: 700;
}

code {
    font-family: courier, monospace;
    font-weight: 700;
    font-size: 100%;
    color: dimgrey;
}

img {
    width: 100%;
    margin: 2rem 0 4rem 0;
    border-radius: 2rem;
}

.case {
    display: flex;
    align-items: center;
    flex-direction: column;
    /*background-color: lightgrey;*/
    margin-top: 4rem;
    margin-bottom: 5rem;
    border-radius: 2rem;
}

.texte-bulle {
    max-width: 70%;
    text-align: center;
    font-size: 1.7rem;
    line-height: 1.6;
    background-color: white;
    margin-top: 3rem;
    margin-bottom: -1.3rem;
    padding: 2rem 4rem;
    border: solid 2px black;
    border-radius: 2rem;
}

.texte-bulle ul {
    text-align: left;
    padding-left: 3rem;
    margin-top: -1rem;
}

.pointe-bulle {
    width: 50%;
    margin-top: .8rem;
    margin-bottom: -2rem;
}

.cadre {
    border: solid 1px black;
    padding: 3rem;
}

.text-align-center {
    text-align: center;
}

footer {
    border-top: solid 1px dimgrey;
    margin-top: 4rem;
}

footer p {
    font-size: 1.1rem;
    text-align: center;
}

#logo {
    width: 250px;
    display: block;
    margin: 0 auto;
}

@media (max-width:800px) {
    h1 {
        font-size: 250%;
    }

    .chapo {
        font-size: 1.2rem;
    }

    h2 {
        font-size: 150%;
    }

    p,
    ol,
    ul,
    li {
        font-size: 1.1rem;
        line-height: 1.6;
    }

    .texte-bulle {
        font-size: 1.2rem;
    }

    .bouton a {
        font-size: 110%;
    }

    footer p {
        font-size: 0.8rem;
    }

    #logo {
        width: 180px;
    }
}