body {
    font-family: Arial, Helvetica, sans-serif;
}
/* The Modal (background) */
.modal1 {
    display: none;
    position: fixed;
    top: 0px;
    left: 0px;
    right: 0px;
    bottom: 0px;
    background-color: rgba(58, 63, 81, 0.8);
    z-index: 9999;
    overflow-y: auto;
}
/* Modal Content */
.modal1-content {
    background-color: #fefefe;
    margin: auto;
    padding: 0;
    border: 1px solid #888;
    width: 50%;
    margin-top:20px;
}

@media screen and (max-width: 600px) {
    .modal1-content {
        width: 90%; /* The width is 100%, when the viewport is 800px or smaller */
    }
}
/* The Close Button */
.close {
    color: #aaaaaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
}

    .close:hover,
    .close:focus {
        color: #000;
        text-decoration: none;
        cursor: pointer;
    }