body, html {
    height: 100%;
    background-image: linear-gradient(rgb(166, 210, 255), rgb(0, 84, 166), rgb(0, 7, 15));
    text-align: center;
}

.card {
    background-color: #F7F7F7;
    /* just in case there no content*/
    padding: 20px 25px 30px;
    margin: 0 auto 25px;
    margin-top: 50px;
    /* shadows and rounded borders */
    -moz-border-radius: 2px;
    -webkit-border-radius: 2px;
    border-radius: 2px;
    -moz-box-shadow: 0px 2px 2px rgba(0, 0, 0, 0.3);
    -webkit-box-shadow: 0px 2px 2px rgba(0, 0, 0, 0.3);
    box-shadow: 0px 2px 2px rgba(0, 0, 0, 0.3);
    max-width: 350px;
}