body * {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
}

header,
main,
footer {
    padding-left: 5vw;
    padding-right: 5vw;
}

header {
    background-color: #013672;
}

header img,
footer img {
    width: 200px;
}