body {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    height: 100vh;
    margin: 0.5rem 0 0 0;
    font-family: Arial, sans-serif;

    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;

    background: #efeded url("../../assets/images/unicursal_hexagram.more.grey.png") no-repeat fixed 50% 50%;
}

#container {
    text-align: center;
}

#tab-wrapper {
    display: block;
    align-content: center;
    text-align: center;
    width: 45rem;
    margin-bottom: 0.75rem;
}

#navtabs {
    display: flex;
    border-bottom: 1px solid darkgray;
}

.navtab {
    margin-right: 2rem;
}

.navtab--active {
    font-weight: bold;
}

.nav-link {
    color: darkslategray;
}

.nav-link:hover {
    font-weight: bold;
    color: darkslategray;
    text-decoration: none;
    border: 0;
}

.nav-link--home {
    margin-bottom:0;
    margin-top: 10px;
    padding-bottom: 0;
    background: 0 0;
    border: 1px solid transparent;
    border-top-left-radius: .25rem;
    border-top-right-radius: .25rem;
}

.tab-content {
    margin-top: 0.5rem;
}

#config {
    margin-bottom: 20px;
}

#howto,
#about {
    text-align: justify;
}

#countdown {
    font-size: 1rem;
    margin-bottom: 20px;
}

#dots {
    width: 600px;
    height: 400px;
    border: 1px solid #ccc;
    position: relative;
    margin: 0 auto;
}

.dot {
    width: 20px;
    height: 20px;
    background-color: blue;
    position: absolute;
    border-radius: 50%;
}

.result {
    font-size: 1.5rem;
    margin-top: 20px;
}

.result.correct {
    color: green;
}

.result.incorrect {
    color: red;
}

#sessionEndMessage {
    font-size: 1.5rem;
    margin-bottom: 20px;
}

input[type="number"],
input[type="text"],
button {
    margin: 10px;
    width: 45px;
}

button {
    width: auto;
}

#centeredContent {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
    /*-webkit-appearance: none;*/
    margin: 0;
}

input[type="number"] {
    -moz-appearance: textfield;
}