body { background: #85b6e2; font:14px Verdana,Arial}

section { background: white; width: 75%; margin: auto; padding: 19px; box-shadow: black 0.5em 0.5em 0.3em; border-radius: 1em; max-width: 1024px}

nav { text-align: center; font:15px }

.title {
    color: #07235F;
}

.journal {
    font-style: italic;
}

figure { padding: 0px; box-shadow: black 0.5em -0.5em 0.3em; }

hr { color: black; border: solid; border-width: thin; }

h1 { text-align: center; }
h2 { text-align: center; }
h3 { text-align: center; color: darkblue; }

table.citation
{
   border: 1px solid black;
   text-align: center;
   padding: 15px;
   width: 80%;
   margin-left: auto;
   margin-right: auto;
}

iframe {
   display: block;
   margin: 0 auto;
}

@media only screen and (max-device-width: 800px) {
   section {
      width: 100%;
      padding: 2px;
      box-shadow: none;
    }
 }

 .center {
    display: block;
    margin-left: auto;
    margin-right: auto;
  }
 .center2 {
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 100%;
  }

#tab1 {
   border-collapse: collapse;
}