body {
    font-family: 'Roboto', sans-serif;
    font-size: 1.6rem;
    margin: 0;
    padding: 0;
    background-image: url('https://picsum.photos/1980/1280');
    background-size: cover;
    background-repeat: no-repeat;
    width: 100%;
    height: 100vh; 
   
}   


.modal {
    z-index: 10;
    color: white;
    position: fixed;
    font-size: 20px;
    padding : 10px;
    z-index: 1;
    left: 100px;
    top: 200px;
    width: 50%;
    height: 50%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.59);
}

.model button {
    float: right;
}

.open {
    display: block;
    opacity: 1  ;
    
}


#btn-open {
    background-color: #4CAF50;
    color: white;
    padding: 16px 20px;
    border: none;
    cursor: pointer;
    border-radius: 5px;
    margin : 100px
}