body {
    background-color: #e9ecef !important;
    margin: 20px;
    background-image: url(./image/512.png);
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-position: right bottom;
}

.card {
    margin: 20px;
    width: 40rem;
}

#bottomimage {
    margin-top: 20px;
    margin-bottom: 20px;
    visibility: collapse;
    display: none;
}

#bottomimage img {
    margin: 10px;
    width: 80%;
    height: auto;
}

@media screen and (max-width: 767px) {
    body {
        background-image: unset;
    }

    .card {
        width: 100%;
        margin-left: 0px;
        margin-right: 0px;
    }

    #bottomimage {
        visibility: visible;
        display: unset;
    }
}

.form-check-input {
    cursor: pointer;
}