:root {
    --color-1: #eee;
    --color-2: #222;
    --color-3: #ddd;
}

:root.dark {
    --color-1: #222;
    --color-2: #eee;
    --color-3: #333;
}

body {
    background-color: var(--color-1);
    color: var(--color-2);
    font-family: Arial, Helvetica, sans-serif;    
}

#header {
    text-align: left;
    margin-top: 5px;
    margin-bottom: 20px;
}

#header:hover {
    cursor: pointer;
}

.container {
    max-width: 750px;
    margin: auto;
}

.button {
    display: block;
    background-color: var(--color-2);
    color: var(--color-1);
    border-radius: 0.5em;
    padding: 0.5em 0.75em;
    margin-bottom: 1em;
    text-decoration: none;
}

.darkMode-button {
    position: fixed;
    top: 20px;
    right: 20px;
    border: 0;
    background-color: transparent;
}