:root {
    --color-primary: #182B49;
    --color-primary-light: #00629B;
    --color-grey-dark-2: #212121;
}

* {
    margin: 0;
    padding: 0;
}

html {
    box-sizing: border-box;
    font-size: 62.5%;
    letter-spacing: .005rem;
}

body {
    font-family: 'Open Sans', sans-serif;
    font-weight: 400;
    line-height: 1.67;
    max-width: 100%;
    overflow-x: hidden;
}

h1 {
    font-weight: 700;
    font-size: 1.8rem;
    letter-spacing: .1rem;
    text-transform: uppercase;
    color: var(--color-primary);
}

h2 {
    font-weight: 400;
    font-size: 1.7rem;
}

ul {
    list-style: none;
}

p {
    font-size: 1.4rem;
    padding-bottom: 4rem;
    margin-top: 0;
    padding-top: 0;
}

.papers p {
    color: var(--color-grey-dark-2);
}

span {
    font-size: 1.4rem;
    padding: .2rem 1.2rem .4rem 1.2rem;
    color: white;
    background-color: var(--color-primary-light);
    border-radius: 10rem;
    margin-right: .5rem;
    letter-spacing: .1rem;
    font-style: italic;
}

b {
    color: black;
}

.bottom-margin-small {
    margin-top: 2rem;
}

.bottom-margin-medium {
    margin-top: 6rem;
}

.bottom-margin-md {
    margin-top: 4rem;
}

.margin-right-small {
    margin-right: 2rem;
}

.citation {
    font-size: 1.4rem;
    color: #757575;
}

h4 {
    font-weight: 700;
    font-size: 1.8rem;
    padding: 1rem 0rem .5rem 0rem;
}

.logo {
    font-size: 2.4rem;
    font-weight: 700;
}

@media only screen and (max-width: 75em) {
    .logo {
        margin-left: 0rem;
    }
}

@media only screen and (max-width: 68.75em) {
    .logo {
        margin-left: 0;
    }
}

.navigation {
    margin: 0;
    padding: 0;
}

.navigation__list {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 100%;
}

@media only screen and (max-width: 31.25em) {
    .navigation__list {
        flex-direction: column;
        margin-top: 2rem;
        margin-bottom: 2rem;
    }
}

.navigation__item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    list-style: none;
}

@media only screen and (max-width: 31.25em) {
    .navigation__item {
        margin: 0;
        padding: 0;
    }
}

.navigation__link {
    text-decoration: none;
    color: black;
    padding: 2rem;
    display: block;
}

@media only screen and (max-width: 31.25em) {
    .navigation__link {
        margin: 0rem;
        padding: 0rem;
    }
}

.navigation__link--active {
    padding: 2rem;
    text-decoration: none;
    background: var(--color-primary);
    color: white
}

@media only screen and (max-width: 31.25em) {
    .navigation__link--active {
        margin: 0rem;
        padding: 0rem;
    }
}

.navigation__link--active:hover,
.navigation__link:hover,
.navigation__link:active {
    text-decoration: none;
    color: white;
    background: var(--color-primary);
}

@media only screen and (max-width: 31.25em) {
    .navigation__link--active:hover,
    .navigation__link:hover,
    .navigation__link--active {
        flex-direction: column;
        margin: 0rem;
        padding: 0rem 6rem;
    }
}

.about {
    display: flex;
    flex-direction: column;
    padding-left: 4rem;
    font-size: 1.1rem;
}

@media only screen and (max-width: 37.5em) {
    .about {
        padding-top: 2rem;
        padding-left: 0;
    }
}

@media only screen and (max-width: 31.25em) {
    .about {
        flex-wrap: wrap;
    }
}

.photo img {
    border-radius: 50%;
}

@media only screen and (max-width: 75em) {
    .photo {
        margin-left: 0rem;
    }
}

@media only screen and (max-width: 37.5em) {
    .photo {
        padding-left: 0;
        margin-left: 0;
    }
}

.section-about a,
.section-about a:visited {
    color: var(--color-primary);
    text-decoration: none;
}

.section-about a:hover {
    text-decoration: underline;
}

.papers a,
.papers a:visited {
    color: var(--color-primary);
    text-decoration: none;
}

.papers a:hover {
    text-decoration: underline;
    color: var(--color-primary);
}

.btn {
    margin-right: 1rem;
}

.btn,
.btn:link,
.btn:visited {
    text-transform: uppercase;
    color: var(--color-primary);
    text-decoration: none;
    letter-spacing: 0.15rem;
    font-weight: 700;
    padding: 1.2rem 2.5rem;
    display: inline-block;
    border-radius: .4rem;
    border: 1px solid var(--color-primary);
    cursor: pointer;
    background-color: white;
    outline: none;
}

.btn:hover {
    background-color: var(--color-primary);
    color: white;
}

.btn:active,
.btn:focus {
    outline: none;
}

@media only screen and (max-width: 31.25em) {
    .btn {
        margin-right: 1rem;
        padding: 1rem;
    }
}

.papers:not(last-child) {
    margin-top: 0rem;
}

.footer {
    text-align: center;
}

.footer__link {
    text-decoration: none;
    color: var(--color-primary);
}

.row--right {
    margin-left: 10rem;
}

@media only screen and (max-width: 37.5em) {
    .row--right {
        margin-left: 0rem;
    }
}

.row a,
.row a:visited {
    text-decoration: none;
    color: var(--color-primary);
}

.row a:hover,
.row a:visited:hover {
    text-decoration: underline;
}

@media only screen and (max-width: 31.25em) {
    .publications {
        margin-top: 15rem;
    }
}

.talks {
    color: black;
    font-size: 1.5rem;
    padding-bottom: 4rem;
}

.caption {
    font-style: italic;
    color: var(--color-grey-dark-2);
    font-size: 1.4rem;
    margin-left: .4rem;
}

.awards {
    font-size: 1.4rem;
    padding-bottom: 0.4rem;
}

.academic {
    font-size: 1.5rem;
    padding-bottom: 2rem;
}

.student-type {
    padding-top: 2rem;
    color: #182B49;
    font-size: 1.6rem;
    font-weight: 700;
    padding-bottom: .2rem;
}

.student-name {
    font-size: 1.7rem;
    padding-bottom: 0.2rem;
}

.book-image {
    padding: 1rem 0rem 1rem 0rem;
}

.container {
    max-width: 100rem;
    margin: 6rem auto;
    min-height: 50rem;
}

@media only screen and (max-width: 75em) {
    .container {
        margin: 3rem auto;
        max-width: 90%;
        width: 100%;
        overflow: hidden;
    }
}

.header {
    font-size: 1.6rem;
    height: 7rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    clear: both;
}

@media only screen and (max-width: 68.75em) {
    .header {
        flex-direction: column;
    }
}

section {
    margin: 5rem auto;
}

@media only screen and (max-width: 68.75em) {
    section {
        margin: 5rem 2rem;
    }
}

.section-about {
    display: flex;
    justify-content: space-between;
    align-items: top;
}

@media only screen and (max-width: 37.5em) {
    .section-about {
        flex-direction: column;
        padding-top: 2rem;
        justify-content: space-between;
        align-items: center;
    }
}

@media only screen and (max-width: 31.25em) {
    .section-about {
        padding-top: 10rem;
    }
}

.button {
    padding: 2rem 0rem;
    display: flex;
    flex: wrap;
}

@media only screen and (max-width: 37.5em) {
    .button {
        padding: 2rem 0rem;
    }
}

.row {
    display: flex;
    align-items: top;
}

@media only screen and (max-width: 37.5em) {
    .row {
        flex-direction: column;
    }
}

@media only screen and (max-width: 37.5em) {
    .grid {
        padding-top: 2rem;
    }
}

.project--row {
    display: flex;
    align-items: top;
}

@media only screen and (max-width: 68.75em) {
    .project--row {
        margin-top: 4rem;
        flex-direction: column-reverse;
    }
}

@media only screen and (max-width: 56.25em) {
    .project--row {
        margin-top: 6rem;
        flex-direction: column-reverse;
    }
}

@media only screen and (max-width: 37.5em) {
    .project--row {
        margin-top: 6rem;
        flex-direction: column-reverse;
    }
}

@media only screen and (max-width: 31.25em) {
    .project--row {
        margin-top: 14rem;
        flex-direction: column-reverse;
    }
}

@media only screen and (max-width: 68.75em) {
    .row--1 {
        padding-left: 0rem;
        margin-bottom: 2rem;
    }
}

@media only screen and (max-width: 56.25em) {
    .row--1 {
        padding-left: 0rem;
    }
}

.row--2 {
    margin-right: 2rem;
}

@media only screen and (max-width: 56.25em) {
    .row--2 {
        margin-right: 0rem;
    }
}

@media only screen and (max-width: 37.5em) {
    .row--2 {
        margin-right: 0rem;
    }
}

.project--row {
    font-size: 1.4rem;
}

.row--1 li {
    display: block;
}

.row--1 li:focus,
.row--1 li:active {
    outline: none;
}

.row--1 a:focus,
.row--1 a:active {
    outline: none;
}

.tab__link {
    text-decoration: none;
    color: black;
    padding: 1rem;
    display: block;
}

@media only screen and (max-width: 31.25em) {
    .tab__link {
        margin: 0rem;
        padding: 0rem;
    }
}

.tab__link:active,
.tab__link:focus {
    text-decoration: none;
    color: white;
    background-color: var(--color-grey-dark-2);
}

@media only screen and (max-width: 31.25em) {
    .tab__link:active,
    .tab__link:focus {
        flex-direction: column;
        margin-top: 2rem;
        margin-bottom: 2rem;
    }
}

@media only screen and (max-width: 31.25em) {
    .tab__link:active,
    .tab__link:focus {
        margin: 0rem;
        padding: 0rem;
    }
}

.tab__link:hover {
    text-decoration: none;
    color: white;
    background-color: var(--color-grey-dark-2);
}

@media only screen and (max-width: 37.5em) {
    .tab__link:hover {
        flex-direction: column;
        margin-top: 2rem;
        margin-bottom: 2rem;
        padding: 0rem;
    }
}

@media only screen and (max-width: 31.25em) {
    .tab__link:hover {
        margin: 0rem;
        padding: 0rem;
    }
}

.active {
    color: white;
    background-color: var(--color-grey-dark-2);
}

.article a {
    text-decoration: none;
    color: var(--color-primary);
}

.article p {
    font-size: 1.5rem;
}

.title {
    font-weight: 700;
    font-size: 2rem;
    margin-bottom: 2rem;
}

.subtitle {
    font-style: italic;
    font-weight: 700;
    font-size: 1.6rem;
    padding: .5rem 1rem .5rem 1rem;
    margin-bottom: 1rem;
    background-color: #dadfe1;
}

.p-pro {
    font-size: 1.5rem;
    padding-bottom: .5rem;
}

.quote {
    font-size: 1.5rem;
    color: #7e7e8e;
    padding-bottom: 3rem;
    margin-top: -.4rem;
}

.img-pro {
    margin-bottom: 3rem;
}