body {
  background-color: #ebebeb;
}

/* HEADER */

.header {
    border-left: 6px solid cadetblue;
    background-color: #ebebeb;
    position: sticky;
    top: 0px;
}

.header .title {
    display: block;
}

.header h1 {
    margin-left: 10px;
    margin-bottom: 4px;
}

.header img {
    position: absolute;
    right: 0;
    top: 0;
    width: 124px;
}

.header nav {
    background-color: cadetblue;
    color: white;
}

.header nav a {
    color: white;
    margin-inline: 10px;
}

/* MAIN CONTENT */

.main-content {
    border-left: 6px solid cadetblue;
}

.main-content section {
    margin-left: 10px;
}

.main-content h2,h3 {
    border-bottom: 6px solid cadetblue;
    border-left: 6px solid darkgrey;
    padding-bottom: 4px;
    padding-left: 10px;
}

.main-content h2 {
    background-color: cadetblue;
}

/* ASIDE */

.links {
    background-color: #ebebebca;
    border: 6px solid cadetblue;
    display: block;
    float: right;
    position: fixed;
    top: 400px;
    right: 8px;
    height: 400px;
}

/* FOOTER */

footer {
    background-color: darkgray;
    padding: 0;
    margin: 0;
    position: sticky;
    bottom: 0px;
}

footer p {
    display: inline-block;
    text-align: right;
    padding: 0;
    margin: 0;
}