body {
    margin: 0;
    padding: 0;
    font-family: "Edu TAS Beginner", serif;
    background-image: url("images/background-portrait.jpg");
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    background-attachment: fixed;
}

.overlay {
    position: fixed;
    inset: 0px;
    background-color: hsla(0, 0%, 0%, 0.5);
}

h1 {
    color: white;
    text-align: center;
    font-size: 38px;
    margin-bottom: 8px;
}

h2 {
    color: white;
    text-align: center;
    font-size: 24px;
    margin-top: 8px;
}

.flex-column {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    width: 100%;
}

.button-container {
    width: 100%;
    padding: 10px;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
}

button {
    padding: 10px 20px;
    margin: 5px;
    max-width: 95%;
    font-family: "Edu TAS Beginner", serif;
    font-size: 16px;
    text-align: center;
    color: white;
    border: solid 1px white;
    background-color: black;
    cursor: pointer;
}

button:hover {
    background-color: hsl(0, 0%, 20%);
}

@media (min-width: 600px) {
    h1 {
        font-size: 48px;
        margin-bottom: 8px;
    }

    h2 {
        font-size: 24px;
        margin-top: 8px;
    }

    button {
        font-size: 20px;
    }
}

@media (orientation: landscape) {
    body {
        background-image: url("images/background-landscape.jpg");
    }
}