.modal {
    display: none; 
    position: fixed; 
    z-index: 1; 
    left: 0;
    top: 0;
    width: 100%; 
    height: 100%; 
    overflow: auto; 
    background-color: rgb(0,0,0); 
    background-color: rgba(0,0,0,0.4); 
}


.modal-content {
    background-color: #fefefe;
    margin: 15% auto; 
    padding: 20px;
    border: 1px solid #888;
    width: 80%; 
    max-width: 500px; 
    text-align: center;
    position: relative;
}


.close {
    color: #aaa;
    font-size: 28px;
    font-weight: bold;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 10px;
}

.close:hover,
.close:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}