/*ex-oc-3-5-15*/


.lien {

    position: relative;   
}

.bouton {
    position: absolute;
    top: 360px;
    right: 0;
    bottom: 0;
    left: 200px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 50px;
    color: rgb(110, 57, 170);
    background-color:  rgba(157, 248, 195, 0.9);
    border: 1px solid rgb(62, 201, 155);
    box-shadow: rgb(17, 231, 160) 1px 1px 30px;
    border-radius: 25px; 
    width: 800px;
    height: 130px;
    display: none;
}

.lien:hover .bouton {
    display: flex;     
}


@media screen and (max-width: 960px) {

    .lien {
        position: relative;   
    }    
    
    .bouton {
        position: absolute;
        top: 360px;
        right: 0;
        bottom: 0;
        left: 5%;
        display: flex;
        justify-content: center;
        align-items: center;
        font-size: 20px;
        color: rgb(110, 57, 170);
        background-color:  rgba(157, 248, 195, 0.9);
        border: 1px solid rgb(62, 201, 155);
        box-shadow: rgb(17, 231, 160) 1px 1px 30px;
        border-radius: 25px; 
        width: 400px;
        height: 80px;
        display: none;
    }
      
    .lien:hover .bouton {
        display: flex;          
    }
    
    .img1 {
        width: 400px;
    }

    h2 {
        font-size: 28px;
    }

    .s5 {
        font-size: 17px;
        padding-left: 10px;
    }

    .b3 {
        grid-column: 1/2;
        grid-row: 3/4;
        margin: 20px 5px 5px 5px;
    }
    .b4{
        grid-column: 1/2;
        grid-row: 2/3;    
    }
    
    footer {
        grid-template-columns: none;
        padding: 5px;   
    }
    .foot2 {
        padding: 7px;
        text-align: center;
    }

    .s8 {
        width: 30px;
    }
}