body {
    background-color: rgb(70, 232, 105);
    font-family: Arial, Helvetica, sans-serif;
}

header {
    display: flex; /* put things side by side */
    background-color: darkgreen; 
    height: 2rem; /* 1 rem = 16 px */
    line-height: 2rem; /* line of text = height = vertical centered text */
    color: white;
    border-bottom: 4px solid rgb(0, 65, 0); /* width + type + color */
}

header p {
    font-family: Suse Mono, Arial, Helvetica, sans-serif;
    font-weight: 400;
    font-style: normal;
    font-size: 1.2rem;
    margin-left: 1rem;
}

header img {
    width: 4.5rem;
    height: 2rem;
}

h1 {
    font-family: Suse Mono, Arial, Helvetica, sans-serif;
    font-weight: 400;
    font-style: normal;
    font-size: 2rem;
    margin: 1rem;
}

nav {
    margin-bottom: 4rem;
}

footer {
    font-family: Suse Mono, Arial, Helvetica, sans-serif;
    font-weight: 400;
    font-style: normal;
    font-size: 1.2rem;
    display: flex; /* put things side by side */
    background-color: darkgreen; 
    height: 2rem; /* 1 rem = 16 px */
    line-height: 2rem; /* line of text = height = vertical centered text */
    color: white;
    border-bottom: 4px solid rgb(0, 65, 0); /* width + type + color */
}