body{
    background-image: linear-gradient(to top, #30cfd0 0%, #210642 100%);
}
body>div{
    position: relative;
}
.main_bts{
    margin-bottom: 38px;
}
.backgranoud-bts {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    /*box-shadow: 0px 80px 78px 1px #210642;
    /*background-image: url(image/bts.jpg);*/
    background-repeat: no-repeat;
    background-size: cover; /* Fait en sorte que l'image couvre toute la zone */
    background-position: center; /* Centre l'image */
    width: 100%;
    /*height: 404px; /* Définit la hauteur pour couvrir l'intégralité de la fenêtre */
}
.backgranoud-bts>div{

}
h1{
    font-family: "roboto", sans-serif;
    text-transform: uppercase;
    color: white;
    font-size: 50px;
    font-weight: 700;
}
.titre h1 {
    overflow: hidden;
    white-space: nowrap;
    border-right: 2px solid white;
    font-family: "Courier New", Courier, monospace;
    animation: typingg 5s steps(30, end), blink 0.5s step-end infinite alternate;
}

@keyframes typingg {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

article h2{
    font-family: "roboto", sans-serif;
    text-transform: uppercase;
   margin-top: 50px;
    color: white;
    font-size: 25px;
    font-weight: 700;
    text-align: center;
}
.presentation{
    color: white;
    font-family: "roboto", sans-serif;
    margin: 10px;
}
.option{
    display: flex;
    color: white;
    border: 10px solid #007bff;
    font-family: "roboto", sans-serif;
    padding: 21px
}
/**********************************Presentation_bts ********************************************/
.bts_sio{
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin-top: 56px;
   /* background-image: url(./image/image2.jpg);
    background-repeat: no-repeat;
    background-size: cover; /* Fait en sorte que l'image couvre toute la zone */
    /*background-position: center; /* Centre l'image */
}
.bts_sio >article{
    width: 90%;
}
.bts_sio header{
    width: 90%;
}
.bts_sio>article div{
   display: flex;
    flex-direction: row;
    gap: 61px;
    width: 100%;
    /*border: 10px solid #007bff;*/
}
.option ul{
    display: flex;
    flex-direction: column;
    margin: 0;
}
.option ul li:first-child{
    list-style-type: none;
}
h1 {
    position: relative;
    display: inline-block;
    padding-bottom: 5px;
}
/****************************************************************/
.option {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}
.option:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}
.animation_text span {
    animation: blinkText 1s infinite;
}
/************************************Responsives ********************************/
/*Style pour les écrans larges */

/*Tablettes (entre 768px et 991px) */
@media (min-width: 768px) and (max-width: 991px) {
    .bts_sio > article div {
        flex-direction: column;
    }
    .option {
        width: 100%;
        margin: 10px 0;
    }
    .div-link ul {
        display: flex;
        justify-content: space-around;
    }
}
@media (max-width: 767px) {
    /* Ajustement de la taille de la police pour les titres */
    h1 {
        font-size: 32px;
    }
    article h2 {
        font-size: 20px;
    }
    .presentation, .option {
        font-size: 14px;
    }

    /* Navigation */
    .div-link ul {
        display: none; /* Cacher la barre de navigation horizontale sur petits écrans */
    }
    .navbar-toggler {
        display: block; /* Afficher le bouton pour le menu déroulant */
    }

    /* Sections de contenu */
    .bts_sio {
        margin-top: 10px;
        padding: 10px;
    }
    .bts_sio > article div {
        flex-direction: column; /* Empiler les options sur les petits écrans */
        gap: 10px;
    }
    .option {
        width: 100%;
        padding: 15px;
        margin: 0;
    }

    /* Pied de page */
    footer p {
        font-size: 14px;
    }
}

/*  Petits appareils (moins de 480px) */
@media (max-width: 480px) {
    .animation_text {
        font-size: 20px;
    }
    .bts_sio header h1 {
        font-size: 28px;
    }
    .backgranoud-bts {
        height: auto; /* Ajuster la hauteur pour les petits écrans */
        padding: 20px;
    }
    .option {
        padding: 10px;
    }
}