html {
    height: 100%;
}

body {
    height: 100%;
    background-image: url('../resources/hintergrund.jpg');
    background-size: cover;
    padding: 30px;
    font-family: 'Roboto', sans-serif;
}

h1 {
    font-size:1.3em;
    margin: 0;
    padding: 5px;
}

div.background-sky {
    background-image: linear-gradient(to bottom right, DeepSkyBlue, White);
}

div.card-query {
    max-width: 768px;
    opacity: 0.90;
}

div.input-group-date {
    margin-left: 15px;
    width: 180px;
}

div.input-group-time {
    margin-left: 15px;
    width: 190px;
}

label.custom-error-label {
    color: darkgreen;
}

li.error-message {
    background-color: darkred;
    color: white;
    font-size:0.8em;
}