:root {
    --primary-color: #aaf;
    --primary-text: #fff;
    --secondary-color: #eee;
    --secondary-text: #000;
    --header-size: 14pt;
}

body {
    background-color: #fff;
    margin: 0px;
    padding: 0px;
}

header {
    background-color: var(--primary-color);
    color: var(--primary-text);
    position: fixed;
    top: 0px;
    left: 0px;
    right: 0px;
    overflow: hidden;
    height: calc(var(--header-size) * 1.5);
    font-size: var(--header-size);
    padding: 3px 6px;
    border-width: 0px;
}

header .logo {
    height: calc(var(--header-size) * 1.5);
    display: inline-block;
    position: relative;
    float: left;
    margin: 0px;
    padding: 0px 3px;
}

.main {
    background-color: var(--secondary-color);
    color: var(--secondary-text);
    margin: calc(var(--header-size) * 1.8) 0px 0px 0px;
    padding: 5px;
}

.filedrop {
    border: 1px dashed black;
    padding: 10px;
    margin: 5px;
}

.filedrop.is-dragover {
    border: 2px solid black;
    padding: 9px;
    margin: 5px;
}

footer {
    background-color: var(--primary-color);
    color: var(--primary-text);
    position: fixed;
    left: 0px;
    right: 0px;
    bottom: 0px;
    margin: 0px;
    padding: 1px 3px;
    display: none;
}


#game {
    justify-content: center;
    align-items: center;
    text-align: center;
}

#game > .card {
    justify-content: center;
    align-items: center;
    display: inline-block;
}

.front {
    width: 100px;
    height: 135px;
    background-image: url("../media/playing-cards-full-set-vector-3064967.jpg");
    background-repeat: no-repeat;
    margin: auto;
}

.back {
    width: 100px;
    height: 135px;
    background-image: url("../media/playing-cards-full-set-vector-3064967.jpg");
    background-repeat: no-repeat;
    background-position: -450px -850px;
    margin: auto;
}