body {
    font-family: Calibri, "PT Sans", sans-serif;
    font-size: 1.2rem;
    margin: 0px 0px 0px 0px;
    padding: 0px 0px 0px 0px;
    color: Red;
    width: 100%;
    height: 100%;
    background-size: 100% 100%;
}

    body > div {
        height: 100vh;
        background-image: url(../themes/blue/images/background.png);
        background-position: bottom center;
        background-repeat: no-repeat;
        background-color: #CCCCCC;
    }

.user-card {
    max-width: 30%;
    position: relative;
    width: auto;
    padding: 15px;
    color: black;
    background-color: rgba(255, 255, 255, 0.7);
    box-shadow: 0px 2px 2px 0px rgba(0,0,0,0.5);
    margin-bottom: 9px;
    margin-right: 10px;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
}

    .user-card .card-title {
        font-weight: bold;
        font-size: 1.5rem;
    }

span {
    text-align: center;
}