.popup {
position: fixed;
margin: 6rem auto 0 auto;
width: 20%;
height: auto;
background-color: rgb(255, 255, 255);
display: none;
justify-content: center;
align-items: center;}
.popup-content {
padding: 20px;
border-radius: 15px;
box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
position: relative;
text-align:center;
border: 0.1rem solid rgb(0, 0, 0)}
.close-button {
position: absolute;
top: 10px;
right: 10px;
font-size: 2.1rem;
cursor: pointer;}
/* Container for error-message */
.box{
text-align:center;
height: auto;
width: 50%;
margin: 0 auto;
padding: 5px;
margin-top: 5%;
background-color: rgb(255, 255, 255);
border-radius:15px;
box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.3), 0 6px 20px 0 rgba(0, 0, 0, 0.4);}