html {
    height:100%;
    box-sizing: border-box;
}

* {
    box-sizing: inherit;
}

body {
    height: 100%;
    margin: 0;
    font-family: Arial, sans-serif;
    display: grid;
    grid-template-rows: auto 1fr auto;
}

header {
    background-color: rgb(40,53,131);
    color: white;
    margin-bottom: 20px;
}

main, footer {
    max-width: 1600px;
    width: 100%;
    margin: 0 auto;
    padding: 0 20px;
}

.hidden {
    display: none;
}

.failure {
    color: #a71717;
}

.success {
    color: green;
}

h2 {
    margin-top: 0;
}

header h1 {
    text-align: center;
}

a {
    color: rgb(40,53,131);
}