style.css

/* CSS Document */
@import url(https://fonts.googleapis.com/css?family=Open+Sans);

body {
  font-family: 'Open-Sans', sans-serif;
  font-weight: 300;
  background-color: #fff;
}
.content {
  width: 1000px;
  padding: 25px 50px;
  margin: 25px auto;
  background-color: white;
  box-shadow: 0px 0px 10px #999;
  border-radius: 15px;
  font-family: "Google Sans";
}
.contentblock {
  width: 950px;
  margin: 0 auto;
  padding: 0;
  border-spacing: 25px 0;
}
.contentblock td {
  background-color: #fff;
  padding: 25px 50px;
  vertical-align: top;
  box-shadow: 0px 0px 10px #999;
  border-radius: 15px;
}
#authors a {
  text-decoration: none; color: black;
  margin: 0 10px;
}
#results, #results2  a {
    text-decoration: none;
  color: black;
}
#authors {
  text-align: center;
  margin-bottom: 20px;
  font-size: 20px;
}
#conference {
  text-align: center;
  margin-bottom: 20px;
  font-style: italic;
}

h1 {
  text-align: center;
  font-size: 35px;
  font-weight: 300;
}
h2 {
  font-size: 30px;
  font-weight: 300;
}
h4 {
  font-size: 24px;
  font-weight: 300;
}
code {
  display: block;
  padding: 10px;
  margin: 10px 10px;
}
p {
  line-height: 25px;
  text-align: justify;
}
p code {
  display: inline;
  padding: 0;
  margin: 0;
}
#teasers {
  margin: 0 auto;
}
#teasers td {
  margin: 0 auto;
  text-align: center;
  padding: 5px;
}
#teasers img {
  width: 250px;
}
#results img {
  width: 133px;
}
#seeintodark {
  margin: 0 auto;
}
#sift {
  margin: 0 auto;
}
#sift img {
  width: 250px;
}
.downloadpaper {
  padding-left: 20px;
  float: right;
  text-align: center;
}
.downloadpaper a {
  font-weight: bold;
  text-align: center;
}
.teaser-img {
  width: 80%;
  display: block;
  margin-left: auto;
  margin-right: auto;
}
.teaser-gif {
  display: block;
  margin-left: auto;
  margin-right: auto;
}
.summary-img {
  width: 100%;
  display: block;
  margin-left: auto;
  margin-right: auto;
}
.video-iframe {
  width: 1000;
  height: 800;
  margin: auto;
  display: block;
}
.container {
  display: flex;
  align-items: center;
  justify-content: center
}
.image {
  flex-basis: 40%
}
.text {
  font-size: 20px;
  padding-left: 20px;
}
.center {
  margin-left: auto;
  margin-right: auto;
}
.boxshadow {
  border: 1px solid;
  padding: 10px;
  box-shadow: 2px 2px 5px #888888;
}
.spacertr {
  height: 8px;
}
.spacertd {
  width: 40px;
}


.grid-container {
    width: 1000;
    margin-left: auto;
    margin-right: auto;
    display: grid;
    grid-template-columns: repeat(5, 1fr); /* 5 columns */
    gap: 10px;
    padding: 10px;
}

.card {
    perspective: 1000px;
    position: relative;
}

.card:before {
    content: '';
    display: block;
    padding-top: 100%; /* Aspect ratio 1:1 */
}

.card-inner {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    transition: transform 0.8s;
    transform-style: preserve-3d;
}

.card-front, .card-back {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-front img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.card-back {
    background-color: #f8f8f8;
    color: #333;
    transform: rotateY(180deg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.card.flipped .card-inner {
    transform: rotateY(180deg);
}