* {
    margin: 0;
    box-sizing: border-box;
}

body {
    font-family: sans-serif;
}

p {
    margin-bottom: 1rem;
}

#logo {
    width: 4rem;
    height: 4rem;
    object-fit: cover; /* prevent distortion of image */
    border-radius: 50%; /* circle shape */
    position: absolute;
    top: 1rem;
    left: 1rem;
    z-index: 2;
}

header {
    background-color: rgba(0, 0, 0, .7);
    width: 100%; /* full width */
    height: 6rem;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
}