html, body {
    height: 100%;
    margin: 0;
    font-family: sans-serif;
}

#wrapper {
    min-height: calc(100% - 2em);
    display: flex;
    flex-direction: column;
    row-gap: 1em;
    padding: 1em;
}

#main {
    flex-grow: 1;
}


header {
    display: flex;
    justify-content: space-between;
    border-bottom: solid black 1px;
    padding-bottom: 1em;
}

footer {
    display: flex;
    justify-content: space-between;
}

.version {
    color: #aaa;
    font-family: 'Courier New', Courier, monospace;
    font-size: 8pt;
}

.brand {
    font-size: 1.5em;
    font-weight: bold;
}

.btn-login {
    background-color: #aaa;
    border: solid #555 1px;
    border-radius: 0.5em;
    padding-top: 0.25em;
    padding-bottom: 0.25em;
    padding-left: 0.5em;
    padding-right: 0.5em;
    text-decoration: none;
}