body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: #e6f2ff;
}

/* shared layout */
header, nav, main, footer {
    max-width: 1170px;
    width: 90%;
    margin: 0 auto;
    border: 2px solid #333;
    position: relative;
    background-color: #ffffff;
}

/* header */
header {
    height: 120px;
}

header h1 {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

/* nav */
nav {
    height: 100px;
    position: relative;
}

nav a {
    position: absolute;
    top: 50%;
    margin-top: -8px;
    white-space: nowrap;
}

/* nav links positioning */
nav a:nth-child(1) { left: 8%; }
nav a:nth-child(2) { left: 24%; }
nav a:nth-child(3) { left: 40%; }
nav a:nth-child(4) { left: 56%; }
nav a:nth-child(5) { left: 72%; }
nav a:nth-child(6) { left: 88%; }

nav a:hover {
    text-decoration: underline;
}

/* main */
main {
    min-height: 60vh;
    font-size: 0;
}

/* columns */
.left, .right {
    display: inline-block;
    width: 50%;
    vertical-align: top;
    padding: 1em;
    font-size: 16px;
    box-sizing: border-box;
}

/* image*/
img {
    width: 100%;
    height: auto;
    display: block;
}

.left img {
    width: 95%;  
    height: auto;
    display: block;
}

/* footer */
footer {
    height: 100px;
}

/* footer links */
.footer-links a {
    float: left;
    margin-right: 2em;
    text-decoration: none;
    color: #000;
    position: relative;
    padding-top: 2em;
    padding-left: 2em;
}

.footer-links a:hover {
    text-decoration: underline;
}

/* copyright */
.copyright {
    float: right;
    position: relative;
    padding-top: 2em;
    padding-right: 2em;
}