body {
    background-color: rgba(244, 244, 242, 1.0);
    background-repeat: no-repeat;
    background-position: center top;
    background-attachment: fixed;
    font-family: "Source Sans Pro", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", Oxygen, Cantarell, sans-serif;
    font-size: 1.8rem;
    color: #666666;
    line-height: 3.2rem;
    /* font-weight: 300 !important; */
}

h1 {
    font-size: 4.0rem;
    line-height: 1.2;
    letter-spacing: 0;
}

h2 {
    font-size: 3.6rem;
    line-height: 1.25;
    letter-spacing: 0;
}

h3 {
    font-size: 3.0rem;
    line-height: 1.3;
    letter-spacing: 0;
}

h4 {
    font-size: 2.4rem;
    line-height: 1.35;
    letter-spacing: 0;
}

h5 {
    font-size: 1.8rem;
    line-height: 1.5;
    letter-spacing: 0;
}

h6 {
    font-size: 1.5rem;
    line-height: 1.6;
    letter-spacing: 0;
}

p {
    margin-top: 0em;
    margin-bottom: 1.5em;
}

.extra-vertical-margin {
    margin-top: 20px;
    margin-bottom: 20px;
    margin-left: 0px;
    margin-right: 0px;
}

div#profile-image {
    background-image: url('../images/headshots/SZ-profile-SF-2020.400px.jpg');
    background-position: center top;
    background-repeat: no-repeat;
    background-size: 100%;
    border-radius: 8px;
    min-height: 500px;
}

@media (max-width: 720px) {
    div#profile-image {
        min-height: 300px;
    }
}

/* @media (min-width: 550px) {
    div#profile-image {
        min-height: 500px;
    }
} */

div#profile-text{
    display: flex;
    justify-content: center;
    align-items: center;
    /* min-height: 360px; */
}

/* blocks */
div.header {
    width: 100%;
    height: 69px;    
    text-align: center;
    margin-top: 20px;
    margin-bottom: 0px;
}
}

a.header-nav {
    color: rgba(0, 0, 0, 1.0) !important;
    font-weight: 400;
    text-decoration: none
}

a.header-nav:hover {
    text-decoration: none
}

div.nav {
    margin-top: 20px;
    margin-bottom: 20px;
}

#nav-wrapper {
    display: block;
    float: left;
    position: relative;
    width: 210px;
    left: 50%;
    margin-left: -105px;
    text-align: center;
    height: 4rem;
    /* background-color: red; */
}

span.nav {
    display: block;
    float: left;
    min-height: 2rem;
    line-height: 2rem;
    margin: 1rem 1rem !important;
}

span.email {
    display: block;
    float: left;
    min-height: 2rem;
    line-height: 2rem;
    margin-left: 1rem;
    margin-right: 1rem;
}

.timeline-block {
    margin: 20px 0;
}

.content {}

.project {
    padding: 10px;
    border-radius: 15px;
    margin-bottom: 10px;
}

.paper-title {
    font-size: 0.8em;
    font-weight: 900;
    color: #aaaaaa;
}

.paper-authors {
    font-size: 0.8em;
    font-weight: 500;
    color: #aaaaaa;
}

.reference-links {
    font-size: 0.8em;
    font-weight: 500;    
}

.date {
    font-weight: 400
}

.small-font {
    font-size: 0.8em;
}

img.nav-icon {
    display: block;
    float: left;
    height: 2rem;
}


/* typography */
.bold {
    font-weight: 700 !important;
}


/* colors */
.opaque_bg {
    /* background-color: rgba(250, 250, 250, 1.0); */
    background-color: #ffffff;
}

.yellow {
    background-color: yellow;
}

.left_border_blue {
    border-left: 5px rgba(0, 158, 206, 1.0);
    padding-left: 10px;
}

.left_border_orange {
    border-left: 5px rgba(255, 115, 0, 1.0);
    padding-left: 10px;
}

.timeline-block {
    margin-bottom: 1rem;
}

.timeline-icon {
    width: 5rem;
}

.timeline-icon-container {
    text-align: center;
}

span.emphasized {
    /* color: rgba(255, 115, 0, 1.0); */
    font-weight: 900;
    /* font-style: italic; */
}

.tight-p {
    font-size: 1.8rem;
    line-height: 3.2rem;
    margin: 0;
}

p.final-paragraph {
    margin-bottom: 0;
    margin-block-end: 0;
}


/* alignment */
.text-center {
    text-align: center;
}

.centered {
    margin: 0 auto;
}

/* links */
a {
    color: rgba(67, 146, 241, 1.0);
    font-weight: 400;
    text-decoration: none
}

a:hover {
    color: rgba(67, 146, 241, 1.0);
    text-decoration: none
}

a:visited {
    color: rgba(67, 146, 241, 1.0);
    text-decoration: none
}

a.nav {
    /* font-family: 'Alegreya Sans SC', sans-serif; */
    display: block;
    font-size: 2rem;
    font-weight: 400;
    color: rgba(67, 146, 241, 1.0);
    text-decoration: none;
    height: 2rem;
    line-height: 2rem;
}

a.nav:hover {
    color: rgba(67, 146, 241, 1.0);
    text-decoration: none;
}

a.nav:visited {
    color: rgba(67, 146, 241, 1.0);
    text-decoration: none;
}


/* lists */
ul#ai_econ_media_coverage_us {
    font-size: 1.5rem;
    line-height: 2rem;
    list-style: none;
    padding: 10px;
    border-radius: 15px;
}

ul#ai_econ_media_coverage_international {
    font-size: 1.5rem;
    line-height: 2rem;
    list-style: none;
    padding: 10px;
    border-radius: 15px;
}