#preview{
    position:absolute;
    border:1px solid #00276d;
    background:#1a6531;
    padding:0.2rem;
    display:none;
    border-radius: 0.25rem;
    color:#fff;
    max-width: 400px;
}
#preview img {
    width:100%;
    height:auto;
    display: block;
}