body {
    position: absolute;
    height: 100%;
    width: 100%;
    background-color: #eee;
    color: #000;
}

h1 {
    background-color: #333;
    color: #eee;
    padding: 0.5em 0;
    text-align: center;
    font-family: 'Courier New', Courier, monospace;
    font-weight: bold;
}

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

.full-width {
    width: 100%;
}