/**
 * ????? css
 */

/*???*/
.modal {
    display: none; /* ???? */
    position: fixed; /* ??????? */
    z-index: 1000; /* ???? */
    left: 0;
    top: 0;
    width: 100%; /* ?? */
    height: 100%; /* ?? */
    overflow: auto; /* ???? */
    background-color: rgba(0,0,0,0.4); /* ??? */
}
/*?????*/

.modal-content {
    display: flex; /*??flexbox??*/
    flex-direction: column; /*????*/
    position: relative;
    background-color: #fefefe;
    margin: 2% auto; /*???15% ????*/
    padding: 20px;
    border: 1px solid #888;
    width: 70%;
    animation: topDown 0.4s; /*?????????????????*/
}
@keyframes topDown {
    from {top: -300px; opacity: 0}
    to {top: 0; opacity: 1}
}
/*?????*/
.modal-header {
    display: flex; /*??flexbox??*/
    flex-direction: row; /*????*/
    align-items: center; /*??????*/
    justify-content: space-between;
}
/*??X ??*/
.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
}
.close:hover {
    color: black;
    text-decoration: none;
    cursor: pointer;
}