* { box-sizing: border-box;}

html {
    font-family: Arial, sans-serif;
    background-color: #001651;
    background: url("../images/fond.png") no-repeat bottom center fixed;
    background-size: cover; 
}

body {
    margin: 0 auto;
    padding: 0;
}

h1 {
    text-align: center;
    margin-bottom: 20px;
    color: #f5e8c4;
}

/* header */
#mainMenu {
    background: #001651;
    color: #F5F5C4;
    animation-duration: 500ms;
}
#mainMenu ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    width: 100%;
}

#mainMenu ul li:hover {
    background: #0d70b3;
    color: aliceblue;
    animation-duration: 200ms;
}
#mainMenu ul li a {
    color: #F5F5C4;
    text-decoration: none;
}

/* Main */
main {    
    color: #F5F5C4;
    max-width: 100%;
    overflow-x: hidden;
    padding-bottom: 50px;
}
.installation .installImg,
.youtubeContainer img {
    max-width: 100%;
    width: auto;
    height: auto;
    display: block;
    border: 1px solid #F5F5C4;
    border-radius: 6px;
}

/* Footer */
footer {
    margin-top: 20px;
    padding: 10px;
    text-align: center;
    background: #001651DD;
    color: #F5F5C4;
    position: fixed;
    bottom: 0;
}

/* Class */
.retour {
    background: #0d70b3;
    color: #F5F5C4;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    width: 100%;
    animation-duration: 500ms;
}
.retour:hover {
    background: #0a4d7a;
    border: 1px solid #F5F5C4;
    animation-duration: 200ms;
}
.returnImg {
    width: 16px;
    height: 16px;
    vertical-align: middle;
    margin-left: 8px;
}

.installation li{
    list-style-type: none";
}

.twitchContainer ul {
    list-style: none;
    margin: 0; padding: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
    gap: 30px;
    justify-items: center;
}
.twitchContainer ul li:first-child {
    grid-column: 1/3;
    width: 70%;
}
.twitchContainer ul li:nth-child(2),
.twitchContainer ul li:nth-child(3) {
    width: 90%;
}

.twitch-container {
    aspect-ratio: 16 / 9;
    width: 100%;
}

.twitch-container iframe {
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 6px;
}
.red {color: rgb(216, 20, 20);
}

/* responsive */
@media screen and (min-width: 1024px) {
    body {
        max-width: 1024px;
    }

    #mainMenu {
    display: flex;
    align-items: center;
    border-radius: 0 0 6px 6px;
    border: 1px solid #F5F5C4;
    border-top: none;
    animation-duration: 500ms;
    }
    #mainMenu ul {
        justify-content: center;
    }
    #mainMenu ul li {
        padding: 10px 20px;
        font-size: 18px;
    }
    #mainMenu ul li ul {
        position: absolute;
        background: #001651;
        border: 1px solid #F5F5C4;
        border-radius: 6px;
        padding: 10px 0;
    }
    #mainMenu ul li ul {
        width: 150px;
    }
    #mainMenu ul li:hover {
        background: #0d70b3;
        color: aliceblue;
        animation-duration: 200ms;
    }
    #mainMenu ul li a {
        color: #F5F5C4;
        text-decoration: none;
    }
    footer {
        width: 1024px;
        border-radius: 6px 6px 0 0;
        border: 1px solid #F5F5C488;
        border-bottom: none;
        font-size: 12px;
    }
    h1 {
        font-size: 32px;
    }
}
@media screen and (max-width: 1023px) {
    body {
        width: 100%;
    }

    h1 {
        font-size: 120%;
    }

    footer {
        width: 100%;
        font-size: 60%;
    }

    #mainMenu ul {
        flex-direction: column;
        align-items: center;
    }

    #mainMenu ul li {
        text-align: center;
        width: 100%;
        padding: 10px 0;
    }
    #mainMenu ul li ul {
        display: none;
        position: static;
        width: 100%;
    }
    #mainMenu ul li:hover ul {
        display: block;
    }
}