.institut_contain_top{    
    height: 650px;
    
    padding-top: 100px;
    padding-bottom: 80px;

    background-repeat: no-repeat;
    background-size: cover;
    background-position: 0 -80px;

    position: relative;
}

.institut_contain_top .div_contain_video{
    height: 100%;
    width: 100%;    
    position: absolute;
    top: 0;
    left: 0;
    overflow: hidden;
}
.institut_contain_top .div_contain_video video{
    width: 100%;
}

.institut_contain_top .bg_dark{
    background-color: rgba(0, 0, 0, 0.353);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}
.institut_contain_top .bg_dark .contain_text{
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: flex-end;
    padding-bottom: 60px;
}
.institut_contain_top .bg_dark .contain_text .element{
    height: auto;
}
.institut_contain_top .bg_dark .contain_text .element p{
    color: white;
    font-size: 22px;
    text-align: center;
    margin-bottom: 10px;
}
.institut_contain_top .bg_dark .contain_text .element p.text_01{
    font-size: 62px;
    font-weight: bold;
    line-height: 62px;
}

.institut_contain_top div.information .text_01{
    font-size: 40px;
    color: white;
    font-weight: 600;
}
.institut_contain_top div.information .text_01 span{
    font-size: 52px;
    letter-spacing: 3px;
    word-spacing: 5px;
}
.institut_contain_top .text_02{
    margin-top: 30px;
}
.institut_contain_top div.information a.btn_decouvrir{
    width: 280px;
    height: 40px;
    background-color: black;
    color: white;
    border: 1px solid white;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 15px;
    text-transform: uppercase;
    padding-left: 35px;
    padding-right: 35px;
    
}
.institut_contain_top div.information a.btn_decouvrir span{
    font-weight: bold;
    margin-left: 15px;
}

/* second */

.contain_cascade div.information{
    position: relative;
    z-index: 10;
} 
.contain_cascade div.information .text_01{
    font-size: 40px;
    color: white;
    font-weight: 600;
    line-height: 38px;
}
.contain_cascade div.information .text_01 span{
    font-size: 52px;
    
    text-transform: uppercase;
}
.contain_cascade div.information .text_03{
    width: 45%;
    color: rgb(209, 209, 209);
}

.contain_cascade div.information a.btn_decouvrir{
    width: 280px;
    height: 40px;
    background-color: black;
    color: white;
    border: 1px solid white;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 15px;
    padding-top: 8px;
    padding-bottom: 8px;
    text-transform: uppercase;
    text-decoration: none;
    
}
.contain_cascade div.information a.btn_decouvrir span{
    font-weight: bold;
    margin-left: 15px;
}

.contain_cascade .info_last p{
    width: 700px;
    font-size: 18px;
    color: rgb(235, 235, 235);
}




.institut_contain_title_product{
    margin-top: 30px;
    margin-bottom: 30px;
}
.institut_contain_title_product p{
    margin: 0;
    padding: 0;
    text-align: center;
}
.institut_contain_title_product p.title_01{
    font-size: 42px;
    font-weight: bold;
}
.institut_contain_title_product p.title_01.title_produit_pro{
    font-size: 28px;
    font-weight: bold;
    width: 70%;
}
@media only screen and (max-width:950px){
    
    .institut_contain_title_product p.title_01.title_produit_pro{
        font-size: 28px;
        width: 90%;
    }
}
@media only screen and (max-width:650px){
    
    .institut_contain_title_product p.title_01.title_produit_pro{
        font-size: 24px;
        width: 95%;
    }
}
@media only screen and (max-width:450px){
    
    .institut_contain_title_product p.title_01.title_produit_pro{
        font-size: 18px;
        width: 95%;
    }
}
.institut_contain_title_product p.title_02{
    color: #3f3a3a;
}

.institut_contain_product {
    margin-bottom: 30px;
}



@media only screen and (max-width : 450px) {
    .institut_contain_top_01{
        padding-top: 30px;
    }
    .institut_contain_top div.information .text_01{
        font-size: 26px;
    }
    .institut_contain_top div.information .text_01 span{
        font-size: 38px;
        letter-spacing: 3px;
        word-spacing: 5px;
    }
}





/* PARTIE DES BULLES */

section.element_bulles{
    position: relative;
    top: 30px;
    height: 480px;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

section.element_bulles .contain_all_bulles{
    position: relative;
    width: 90%;
    height: 100%;
}
section.element_bulles .bulles{
    height: 120px;
    width: 120px;

    position: absolute;
    top: 0;
    left: 0;

    background-color: rgba(0, 0, 0, 0.911);
    border: 0px solid white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    
    box-shadow: 1px 10px 15px 1px rgb(192, 192, 192);
}
section.element_bulles .bulles.bulles_01{
    top: 10px;
    left: 300px;
}
section.element_bulles .bulles.bulles_02{
    top: 55px;
    left: 120px;
    width: 200px;
    height: 200px;
}

section.element_bulles .bulles.bulles_03{
    top: 190px;
    left: 250px;
    width: 280px;
    height: 280px;
}
section.element_bulles .bulles.bulles_05{
    top: 10px;
    left: calc(100% - 500px);
    width: 280px;
    height: 280px;
    padding: 15px;
}
section.element_bulles .bulles.bulles_04{
    top: 240px;
    left: calc(100% - 300px);
    width: 180px;
    height: 180px;
    padding: 15px;
}
section.element_bulles p{
    color: white;
    font-size: 16px;
    font-style: italic;
    padding: 0;
    margin: 0;
    text-align: center;
}