.bloc_acceuil{
    margin: 0;
    padding: 0;
    height: 80vh;
    display: flex;
    justify-content: space-evenly;
    align-items: center;
}

a{
    text-decoration: none;
}

h2{
    color: black;
    font-family: verdana;
    background-color:rgba(255, 255, 255, 0.49) ;
    border: solid rgb(255, 255, 255) 2px;
    border-radius: 5px;
    box-shadow: 0px 0px 10px rgb(255, 255, 255);
    padding: 2vw;
}