* {
    margin: 0;
    padding: 0;
}

body, html {
    height: 100%;
}

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

.container p {
    width: 400px;
    padding: 15px;
    background-color: #f1f1f1;
}