body {
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    font-family: gill sans, sans-serif;
  }

  img {
    -webkit-user-drag: none;
    user-select: none;
  }

  .parallax-header {
    height: 85vh;
    width: 107.75vw;
    background-image: url('media/img/head.png');
    background-size: cover;
    background-position: right;
    background-repeat: no-repeat;
    position: relative;
    background-color: #212121;

  }
  
  #head {
    color: white;
    position: absolute;
    display: flex;
    flex-direction: row;  
    width: 100vw;
    height: 80vh;
    align-items: center;
    padding-left: 4vw;
  }
  

  .content {
    padding-top: 40px;
    min-height: 100vh;
    
  }

  #head-quote {
      width: 40vw;
      
  }

  #head-title {
      font-size: 5vw;
  }

  #head-quote-quote {
      font-size: 3.2vw;
  }

  #head-quote-from {
      font-size: 2vw;
      font-style: italic;
  }
  @media only screen and (max-device-width: 1366px) {
      .parallax-header {
          height: 20vh;
      }

      #head {
          height: 20vh;
      }
  }


  .parallax {
    /* The image used */

    /* Full height */
    height: 100%; 
    height: 55vh;
    width: 90vw;
    margin-top: 5vh;
    align-self: center;
    /* Create the parallax scrolling effect */
    background-position: center;
    position: relative;
    background-repeat: no-repeat;
    background-size: cover;
    background-attachment: fixed;
  }

  @media only screen and (max-device-width: 1366px) {
      .parallax {
          background-attachment: scroll;
      }
  }

  #talk {
      background-image: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3)), url("media/img/research.jpg");
  }

  #lecture {
      background-image: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.4)), url("media/img/LiLab.jpg");
  }

  #last {
      background-image: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3)), url("media/img/lecture.png");
  }

  

  #navigation {
      position: absolute;
  }

  .sticky {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 99999;
  }

  .nav-header {
    padding: 10px 16px;
    background: #212121;
    color: #f1f1f1;
    height: 9vh;
    display: flex;
    flex-direction: row;
    align-items: center;
    padding-left: 2vw;
   
  }

  #about-view {
      padding-top: 5vh;
      padding-bottom: 5vh;
      background: rgba(210, 211, 211, 0.7);
      background: linear-gradient(rgb(210, 211, 211), rgb(141, 142, 142), rgb(74, 74, 74,), rgb(24, 24, 24));
      width: 100vw;
      display: flex;
      margin-top: 8vh;
      animation: none;

  }


  #about-row {
      display: flex;
      flex-direction: row;
      width: 90vw;
     
      
  }

  #about-image{
      width: 35vh;
      height: 35vh;
      border-radius: 360px;
      background-size: cover;
      background-position: center;
      opacity: 1;
      margin-left: 1vw;
      transition: 1.2s;
      
  }


  .about-paragraph {
      font-size: 20.5px;
      margin-top: 2vh;
      margin-left: 1vw;
      
  }

  #about-text {
      display: flex;
      flex-direction: column;
  }

  #about-title {
      font-size: 30px;
      color: #000000;
      margin-top: 5vh;
      font-weight: bold;
      opacity: 1;
      transition: 1.2s;
  }

  .about-column {
      opacity: 1;
      transition: 1.2s;
  }

  .content {
      width: 100vw;
      background-color: white;
      margin: 0px;
      padding: 0px;
      overflow-x: hidden;
      display: flex;
      flex-direction: column;
  }

  .bar1, .bar2, .bar3 {
    width: 35px;
    height: 5px;
    background-color: #f1f1f1;
    margin: 6px 0;
    transition: 0.4s;
  }

  .bars-container {
      display: inline-block;
      cursor: pointer;
      opacity: .7;
      transition: 0.3s;
      margin-right: 2vw;
  }

  .bars-container:hover {
      opacity: 1;
  }

  #header-text {
      margin-left: .2vw;
  }

  .sidenav {
    height: 100%;
    width: 0;
    position: fixed;
    z-index: 1;
    top: 0;
    left: 0;
    background-color: #111;
    overflow-x: hidden;
    transition: 0.5s;
    padding-top: 60px;
  }

  .sidenav .closebtn {
    position: absolute;
    top: 0;
    right: 25px;
    font-size: 36px;
    margin-left: 50px;
  }

  .nav-header a {
    padding: 8px 8px 8px 32px;
    text-decoration: none;
    font-size: 25px;
    color: #818181;
    display: block;
    transition: 0.3s;
    cursor: pointer;
  }

  .nav-header a:hover {
    color: #f1f1f1;
  }

  #main {
    transition: margin-left .5s;
  }

  .sticky + .content {
      padding-top: 12vh;
  }
  

  #footer {
      width: 100vw;
      bottom: 0;
      left: 0;
      padding: 3vh;
      background:rgb(37, 36, 36);
      margin-top: 1vh;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      font-size: 21px;
      padding-top: 7vh;
      padding-bottom: 5vh;
  }

  #home-research-view {
      width: 100vw;
      padding-top: 1vh;
      padding-bottom: 3vh;
      background: rgba(239, 239, 239, 0.7);
      display: flex;
      flex-direction: column;
  }

  #home-research-title {
      font-size: 31px;
      color: #000000;
      margin-top: 7vh;
      font-weight: bold;
      justify-self: flex-end;
      right: 10vw; 
      transition: .5s;
  }


  #home-research-view {
      width: 100vw;
      align-self: center;
      flex-direction: row;
      display: flex;
      align-items: center;
      text-align: center;
  }

  #home-research-text {
      font-size: 23px;
      line-height: 30px;
      opacity: 0;
      transition: .7s;
      width: 50vw;
      padding-left: 5vw;
      padding-right: 9vw;
      display: flex;
      flex-direction: column;
  }

  #home-research-icon {
      width: 50vw;
      height: auto;
      background-position: center;
      background-size: cover;
      opacity: .4;
  }

  .research-top {
      text-align: left;
      margin-bottom: .5vh;
      opacity: .7;
  }

  .research-bottom {
      text-align: left;
      margin-bottom: .5vh;
      opacity: .7;
  }

  #head-title-image {
      display: block;
      width: 6.5vh;
      height: 6.5vh;
      border-radius: 360px;
      cursor: pointer;
  }

  #footer-top {
      display: flex;
      flex-direction: row;
      margin-bottom: 4vh;
      
  }

  #footer-bottom {
      text-align: center;
      color: whitesmoke;
      justify-content: center;
      align-items: center;
      margin-top: 4vh;
  }

  .shaddow {
      background-color: rgba(0, 0, 0, 0.63);
      width: 100%;
      height: 100%; 
      flex-direction: column;
      justify-content: center;
      align-items: center;
      display: flex;
      transition: 1.2s;
      opacity: 1;
  }
  
  .teaching-logo {
    width: 38vw;
    height: 60vh;
    object-fit: contain;
    transition: .6s;
  }

  .teaching-image {
    height: 70vh;
    width: 50vw;
    background-size: cover;
    background-position: center;
    background-color: #212121;
    cursor: pointer;
  }

  .teaching-image:hover .shaddow, .teaching-image:active .shaddow{
    opacity: 1;
    background-color: rgba(0, 0, 0, 0.9);
  }

  #rice-image {
    background-image: url('media/img/rice.png');   
  }

  #rice-logo {
      background-image: url("media/img/rice-logo.png");
      width: 32vw;
      height: 25vh;
      background-size: cover;
      background-position: center;
      display: block;
      transition: .6s;
  }
  

  #MIT-image {
    background-image: url('media/img/mit.png');
  }

  #northwestern-image {
    background-image: url('media/img/northwestern.jpg');
  }

  #chicago-image {
    background-image: url('media/img/chicago.png'); 
  }

  #cornell-image {
    background-image: url('media/img/cornell.jpeg'); 
  }

  #research-container {
      justify-content: center;
      align-items: center;
      display: flex;
      flex-direction: column;
      padding-top: 4vh;
  }

  .article-view {
    width: 85vw;
    padding: 2vh;
    background-color: rgb(219, 214, 214);
    align-self: center;
    border-radius: 10px;
    display: flex;
    flex-direction: row;
    margin-top: 5vh;
}

.article-figure {
    width: 32vw;
    background: black;
    object-fit: contain;
    margin-left: 2v;
}


.article-column {
    display: flex;
    flex-direction: column;
    width: 49vw;

}

.article-date {
    background-color: #212121;
    color: white;
    padding: 1.2vh;
    display: flex;
    margin-bottom: 1vh;
    border-radius: 5px;
    width: fit-content;
    height: fit-content;

}

.article-figure-view {
    display: flex;
    flex-direction: column;
    width: 40vw;
    justify-content: center;
    align-items: center;
}

.article-title {
    font-size: 23px;
    font-weight: bold;
    margin-bottom: .5vh;
}

.article-with {
    font-style: italic;
    font-size: 15px;
}

.article-at {
    font-style: italic;
    margin-bottom: 2vh;
    font-size: 16px;
    margin-top: .5vh;
}

.article-sum {
    font-size: 19px;
    margin-bottom: 1vh;
}

.article-pdf {
    text-decoration: none;
    transition: .8s;
    background-color: rgba(253, 253, 254, 0);
    padding: 1vh;
    padding-left: 1.5vw;
    padding-right: 1.5vw;
    border-radius: 10px;
    color: black;
    width: fit-content;
    border-width: 1px;
    border-style: solid;
    border-color: black;
    margin-top: 1.2vh;
}
.article-working-annot {
    opacity: 0.6;
    font-style: italic;
}
.article-pdf:hover, .article-pdf:active{
    background-color: rgb(55, 55, 57);
    color: white;
}

.all_research-article {
    transition: 0.4s;
    font-style: normal;
    color: black;
    text-decoration: none;
}
.all_research-article .article-column {
    width: 95%;
}
.all_research-article:hover {
    scale: 1.01;
}

.revised {
    padding: 1vh;
    background-color: rgb(222, 74, 74);
    color: white;
    border-radius: 12px;
    justify-content: center;
    align-items: center;
    height: fit-content;
    width: fit-content;
    justify-self: center;
    align-self: center;
    margin-left: .7vw;
}

.article-award {
    padding: .7vh;
    /*background-color: #b8860b;*/
    color: white;
    border-radius: 9px;
    padding-left: 1vh;
    padding-right: 1vh;
    justify-content: center;
    align-items: center;
    height: fit-content;
    width: fit-content;
    justify-self: center;
    align-self: center;
    margin-left: .7vw;
    margin-bottom: 3vh;
    margin-top: 2.3vh;
    background-color: none;

    color: black;
    transition: .8s;
    font-size: 15px;
    background-color: #b8860b;
    color: wheat;
    z-index: 2000;
}


  .footer-top-stack {
      color: white;
      width: 20vw;
      margin-left: 1vw;
      margin-right: 1vw;
  }

  .email {
      text-decoration: none;
      color: rgb(175, 172, 172);
      transition: 1s;
  }

  .email:hover, .email:active{
      color: white;
  }

  #footer div {
      margin-bottom: .7vh;
  }

  .nav-header h2 {
      font-size: 27px;
      cursor: pointer;
  }

  #go-to-research {
      position: relative;
      color: white;
      padding: .5vh ;
      padding-left: .5vw;
      padding-right: .5vw;
      border-radius: 10px;
      background: linear-gradient(rgba(0,0,0,.45), rgba(41, 41, 41,.45), rgba(64, 64, 64, .45), rgba(85, 85, 85, .45));
      transition: box-shadow 1s;
      margin-top: 3vh;
      cursor: pointer;
      z-index: 1;
      opacity: 1;
      transition: 1s;
      border-width: 0px;
      border-style: solid;
      border-color: #000000;
      width: fit-content;
      align-self: flex-end;
      font-size: 21px;
      font-weight: normal;

      
  }

  #go-to-research:hover, #go-to-research:active{
      box-shadow:  #0000007a;
  }

  #go-to-research::before {
      position: absolute;
      content: "";
      top: 0;
      right: 0;
      bottom: 0;
      left: 0;
      border-radius: 10px;
      background: linear-gradient(rgba(0,0,0,1), rgba(41, 41, 41,1), rgba(64, 64, 64, 1), rgba(85, 85, 85, 1));
      transition: opacity 0.5s linear;
      z-index: -1;
      opacity: 0;
      border-width: 0px;
  
  }

  #go-to-research:hover::before, #go-to-research:active::before{
      opacity: 1;
  }

  #home-other-view {
      width: 100vw;
      padding-top: 5vh;
      padding-bottom: 5vh;
      display: flex;
      flex-direction: row;
      background: rgba(239, 239, 239, 0.7);

  }

  #home-occupation-view {
      width: 50vw;
      font-size: 23px;
      color: #9e9d9d;
      font-weight: bold;
     
  }

  #home-awards-view {
      width: 50vw;
      height: 100%;
      justify-self: center;
      align-self: center;
      opacity: .6;
  }

  .home-occupation {
      margin-bottom: 1.75vh;
      margin-left: 5vw;
      margin-right: 4vw;
  }

  .award {
      display: flex;
      flex-direction: row;
      font-size: 36px;
      margin-right: 7vw;
      justify-content: center;
      align-items: center;
      font-weight: bold;
      margin-top: 4vh;
      margin-bottom: 4vh;
  }

  #award-top {
      opacity: 0;
      transition: 1.2s;
  }

  #award-bottom {
      opacity: 0;
      transition: 1.2s;
  }

  .award-text {
      font-size: 29px;
      align-items: center;
      text-align: center;
      margin-left: .8vw;
      margin-right: .8vw;
      
  }

  .occupation-odd {
   text-align: left;
   opacity: 0;
   transition: 1s;
  }

  .occupation-even {
  text-align: right;
  opacity: 1;
  transition: 1s;
  }

  .occupation-even-animation {
      animation: occupationEven;
      animation-duration: 1s;
  }

  .occupation-odd-animation {
     animation: occupationOdd;
     animation-duration: 1s;
  }

  @keyframes occupationEven {
      from {
          transform: translateX(15%);
      }
      to {
          transform: translateX(0%);
      }
  }

  @keyframes occupationOdd {
      from {
          transform: translateX(-15%);
      }
      to {
          transform: translateX(0%);
      }
  }

  #home-lilab-view {
      width: 100vw;
      display: flex;
      flex-direction: row;
      padding-top: 0vh;
      cursor: pointer;
      text-decoration: none;
      color: #212121;
      transition: .4s;
      background-color: #383737;
  }
  #home-lilab-image {
    width: 50vw;
  }

  @media only screen and (min-width: 900px){
    #home-lilab-view:hover #home-lilab-title{
        transform: translateX(-10vw);
        box-shadow: 5px 0 5px rgba(0, 0, 0, 0.5);      
    }

    #home-lilab-view:hover #home-lilab-text{
        transform: translateX(10vw);
        box-shadow: -5px 0 5px rgba(0, 0, 0, 0.5);
    }
  }

  #home-lilab-view:hover #go-to-lilab{
      transform: scale(1);
  }


  #go-to-lilab {
      width: 100vw;
      z-index: 1;
      position: absolute;
      align-self: center;
      display: flex;
      flex-direction: row;
      justify-content: center;
      height: auto;
      transform: scale(.85);
      transition: 1s;
      
  }

  #home-lilab-title {
      z-index: 2;
      width: 50vw;
      padding-top: 12vh;
      padding-bottom: 12vh;
      justify-content: center;
      align-items: center;
      display: flex;
      flex-direction: column;
      background-color: #5C8CE5;
      transition: 1.2s;
  }

  #home-lilab-text {
      width: 50vw;
      z-index: 2;
      padding-right: 5vw;
      font-size: 22px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      padding-left: 1vw;
      line-height: 36px;
      font-family: gill sans, sans-serif;
      overflow: hidden;
      transition: 1.2s;
      background-color: #e9eff8;
  }

  #lilab-text-one {
      opacity: 0;
      transition: 1s;
      margin-bottom: .2vh;
  }

  #lilab-text-two {
      opacity: 0;
      transition: 1.3s;
      margin-top: .2vh;
      text-align: left;
  }

  .modal {
      width: 100vw;
      height: 100vh;
      background-color: rgba(0, 0, 0, 0.7);
      position: fixed;
      left: 0;
      top: 0;
      transition: 1s;
      display: none;
      opacity: 0;
      justify-content: center;
      align-items: center;
      overflow-y: auto;
      overflow: scroll;
      z-index: 99999999;
  }

  .modal-content {
      width: 50vw;
      height: 80vh;
      background-color: whitesmoke;
      border-radius: 10px;
      margin-top: 15vh;
      overflow: scroll;
      position: relative;

  }

  .modal-image {
      width: 70%;
      margin-top: 2vh;
  }

  .modal-classes {
      overflow-y: scroll;
      height: 60vh;
  }

  .class-title {
      font-size: 26px;
      opacity: .8;
  }

  .class-date {
      font-size: 16px;
      opacity: .7;
  }
  .class {
      margin-bottom: 3vh;
      transition: .8s;
      padding: 2vh;
      padding-left: 3vw;
      padding-right: 3vw;
      position: relative;
  }
  .class-des {
      font-size: 18px;
      margin-top: 1vh;
      line-height: 30px;
      margin-left: 1vw;
      opacity: .9;
  }

  .class:hover, .class:active{
      color: white;
  }

  .class .over {
      position: absolute;
      width: 0%;
      height: 100%;
      top: 0;
      left: 0;
      
      transition: 1s;
  }

  .class:hover .over, .class:active .over{
      width: 100%;
  }

  .rice-over {
      background-color: #213565;
  }

  .mit-over {
      background-color: #B22424;
  }

  .northwestern-over {
      background-color: #4A287D;
  }

  .cornell-over {
      background-color: #A42C25;
  }

  .chicago-over {
      background-color: #75140C;
  }

  .researchNav {
      color: black;
      font-size: 22px;
      font-weight: bold;
      opacity: .2;
      transition: .5s;
      text-decoration: none;
      
      margin-left: 2vw;
  }

  .researchNav:hover, .researchNav:active{
      opacity: 1;
  }

  #teaching-view {
      width: 100vw; 
      display: flex; 
      flex-direction: row; 
      flex-wrap: wrap;
  }
  #about-dis {
    display: block;
  }
  
  #read-more {
      transition: .5s;
      opacity: .2;
      display: none;
  }
  #read-more:hover {
      opacity: 1;
  }
  #about-text-view {
      margin-left: 2vw; 
      width: 75vw;
  }
  #nav-row {
    display: flex;
    flex-direction: row;
  }

  #nav-btn-view {
    width: 28px;
    height: 28px;
    display: none;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    margin-right: 20px;
    margin-left: 2vw;
    transition: .1s;
  }

  #nav-btn-view:active {
    opacity: .4;
    transform: scale(.98);
  }
  .nav-line {
    width: 100%;
    background-color: white;
    border-radius: 25px;
    height: 3px;
  }

  #nav-view-mobile {
    width: 0vw;
    height: 100vh; 
    background-color: rgba(0,0,0, 0.9);
    position: fixed;
    z-index: 100000000000000000;
    left: 0;
    top: 0;
    display: none;
    flex-direction: column;
    overflow: hidden;
    transition: .3s;
  }

  #nav-column {
    display: flex;
    flex-direction: column;
    margin-top: 5vh;
  }

  #nav-view-mobile a{
    color: white;
    text-decoration: none;
    font-size: 30px;
    text-align: center;
    margin-top: 5vh;
    transition: .1s;
    cursor: pointer;
    font-weight: 600;
  }

  #nav-view-mobile a:active {
    opacity: .4;
    transform: scale(.98);
  }

  @media only screen and (max-width: 1100px) {
    .article-view {
        flex-direction: column-reverse;
        width: 90vw;
        align-items: center;
        overflow: hidden;
    }
    .article-figure {
        width: 89vw;
        height: unset;
    }
    .article-column {
        width: 89vw;
        margin-top: 5vh;
    }

    #home-research-icon {
        width: 100vw;
        height: unset;
    }

    #home-research-text {
        width: 90vw;
        padding: 0vw;
    }
  }

  @media only screen and (max-width: 1000px) {
    .teaching-image {
        width: 100vw;
        height: 86vh;
    }
    .teaching-logo {
        width: 76vw;
    }
    #about-row {
        flex-direction: column;
        width: 100vw;
        align-items: center;
    }
    #about-image {
        width: 75vw;
        height: 75vw;
    }
    #about-text-view {
        width: 90vw;
    }
    #home-research-title {
        margin-bottom: 3vh;
    }
    #home-research-view {
        flex-direction: column;
    }
 }
 @media only screen and (max-width:900px){
    #home-lilab-view {
        flex-direction: column;
    }
    #home-lilab-title {
        width: 100vw;
        transform: none;
    }
    #home-lilab-image {
        width: 100vw;
    }
    #home-lilab-text {
        width: 100vw;
        padding: 0vw;
        transform: none;
        align-items: center;
        padding-top: 3vh;
        padding-bottom: 3vh;
    }
    #lilab-text-one, #lilab-text-two {
        width: 90vw;
    }
    #nav-row {
        display: none;
    }
    #nav-btn-view, #nav-view-mobile {
        display: flex;
    }
 }
 @media only screen and (max-width: 700px){
    #home-other-view {
        flex-direction: column;
    }
    #home-occupation-view, #home-awards-view {
        width: 100vw;
    }
    #footer {
        padding-left: 0vw;
        padding-right: 0vw;
    }
    #footer-top {
        flex-direction: column;
        margin-bottom: 4vh;
    }
    .footer-top-stack {
        width: 80vw;
        margin-bottom: 10vh;
    }
    .footer-top-stack:nth-child(even) {
        text-align: right;
    }
    #head-quote-quote{
        font-size: 9vw;
        width: 90vw;
        margin-left: 5vw;
    }
    #head-quote-from{
        font-size: 7vw;
        margin-left: 5vw;
    }
    #head {
        padding: 0vw;
    }
    #head-quote {
        width: 100vw;
        background: linear-gradient(rgba(0,0,0,0.1),rgba(0,0,0,0.3), rgba(0,0,0,0.5), rgba(0,0,0,0.5), rgba(0,0,0,0.3), rgba(0,0,0,0.0));
        height: 80vh;
        justify-content: center;
        display: flex;
        flex-direction: column;
        display: none;
    }
  }
 @media only screen and (max-width: 600px) {
    #go-to-research {
        width: 80vw;
        align-self: center;
    }
 }