body {
    margin: 0px;
    font-family: san-serif;
    background: whitesmoke;
}

header {
    background-color: skyblue;
    margin: 10px 0px;
    padding: 0px 0px;
}

nav ul {
    display: flex;
    padding: 0px 0px;
    margin: 0px 10px;
    justify-content: space-between;
}

nav li {
    padding: 6px;
    display: block;
    text-align: center;
    border-left-style: solid;
    border-right-style: solid;
    border-color: white;
    border-width: 3px;
    background-color: slateblue;
    font-weight: bold;
}

nav a {
    width: 12.5%;
    color: white;
    text-decoration: none;
    width: 100%;
}

nav li:hover {
    background-color: steelblue;
}

aside {
    min-width: 250px;
    max-width: 250px;
}

main {
    width: 940px;
}

.full {
    background-size: cover;
    background-position: center center;
}

h1.pagetitle {
    color: black;
    font-size: 40px;
    text-shadow: 1px 1px 3px gray;
    padding: 5px 30px 1px;
    margin: 5px 0px;
}

div.wrapper {
    max-width: 1200px;
    margin: auto;
}

div.owner_information {
    border: solid;
    border-width: 2px;
    padding: 2px 5px;
    margin: 15px 5px;
}

div.twitter {
    padding: 2px 5px;
}

li.publication_item {
    margin: 10px 0px;
    font-size: 14px;
}

div.language {
    text-align: right;
    padding: 0px 20px;
    font-size: 16px;
    margin: 0px;
}

div.page_contents {
    margin: 15px 0px 10px 10px;
    padding: 0px 3px;
}

div.profile_detail {
    display: flex;
    justify-content: flex-start;
}

div.profile_content {
    margin: 0px 20px;
}

div.main_contents {
    margin: 15px 0px 10px 10px;
    padding: 3px;
    border-top-style: solid;
    border-bottom-style: solid;
    border-width: 3px;
    border-color: #ccc;
}

#contents {
    display: flex;
    justify-content: space-between;
    margin: 5px 10px 5px;
}

div.contents_detail {
    margin: 2px 10px;
}

form.contact_form {
    width: 450px;
    text-align: center;
}

textarea {
    font-size: 16px;
    font-weight: bold;
    font-family: 'Gill Sans';
}

button {
    font-size: 16px;
    font-weight: bold;
    font-family: 'Gill Sans';
    padding: 8px 50px;
}

h2 {
    color: black;
    font-size: 22px;
    line-height: 1;
    margin-top: 10px;
    margin-bottom: 5px;
}

h3 {
    color: black;
    font-size: 16px;
    line-height: 1;
}

p {
    color: black;
    font-size: 16px;
    line-height: 1.2;
    margin: 10px 0px;
}

footer {
    background-color: black;
}

p.copyright {
    color: white;
    line-height: 1.5;
    text-align: center;
}

img.profile_photo {
    margin: 5px 0px;
}

div.skills {
    display: flex;
}

div.skill_content {
    width: 48%;
    height: 250px;
    text-align: center;
    margin: 5px;
    border: solid;
    border-width: 3px;
    border-color: #ccc;
}

td.research_matrix {
    width: 100px;
    height: 100px;
    text-align: center;
    border: solid;
}

table.research_table{
    width: 400px;
    height: 400px;
    margin: auto;
}