iframe {
    display: block;
    border-style:none;
}

.section{
    max-width:70em;
    margin: auto;
    padding-top: 2rem;
    padding-bottom: 0.1rem;
}

.page-title {
    text-align: center;
    font-size:1.5rem;
    margin-left: auto;
    margin-right: auto;
    margin-top: 0px;
    margin-bottom: 0px;
    max-width: 70em;
    font-weight: bold;
}

h1.page-title {
    padding-bottom: 0em;
    margin-bottom: 0.1em;
}

h2.page-title  {
    padding-top: 0em;
    font-size:1.9rem;
    font-weight: normal;
    padding-bottom: 0.5em;
}

.rainbow {
    background: linear-gradient(to right,  #8B00FF, #FF0000, #FF7F00, #e3e383, #00FF00, #0000FF, #4B0082, #8B00FF);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: all 0s ease-in-out;
  }
  

.authors {
    text-align: center;
    margin: auto;
    max-width: 50em;
}

.authors a {
    display: inline-block;
    font-size: 18px;
    padding: 2px;
    padding-left: 10px;
}

.affiliations {
    text-align: center;
    max-width: 50em;
    margin: auto;
    font-size: 15px;
    padding-top: 0.1em;
}

.links {
    text-align: center;
    padding-top: 1em;
}

.links a {
    display: inline-block;
    font-weight: bold;
    padding: 0px 20px 0px 20px;
}
.links i { font-size: 20px; }


.section-title {
    font-size: 1.5em;
    font-weight: normal;
    padding-top: 0.4em;
    border-bottom: 2px solid rgb(211, 211, 211);
    margin-bottom: 0.5em;
}

.subsection-title {
    font-size: 1.3rem;
    font-weight: normal;
    padding-bottom: 0.2em;
}

.figure {
    margin: auto;
    text-align: center;
    max-width: 50em;
    padding-top: 1em;
    padding-bottom: 1em;
}

.caption {
    margin: auto;
    text-align: left;
    max-width: 50em;
    padding-top: 0.1em;
    padding-bottom: 1em;
    color: #949393;
}

.caption-a {
    margin: auto;
    text-align: left;
    max-width: 61em;
    padding-top: 0.1em;
    padding-bottom: 1em;
    color: #949393;
}

.caption-b {
    margin: auto;
    text-align: left;
    max-width: 68em;
    padding-top: 0.1em;
    padding-bottom: 1em;
    color: #949393;
}

.table-of-contents {
    background-color: #f2f2f2; 
    max-width:70em;
    margin-top:1em;
    padding: 10px;
}

.table-of-contents a {
    font-weight: bold;
    background-color: transparent;
    text-decoration: none;
}

.table-of-contents h2 {
    font-size: 1rem;
    font-weight: bold;
    padding-top: 0.2em;
    padding-bottom: 0.2em;
}

.citation{
    margin: 1em;
}

.section p {
    padding-bottom: 0.4em;
}

.question {
    font-weight: bold;
}

.nowrap {
    white-space: nowrap;
}