html {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

body {
  max-width: 1400px;
}

/* Upperside */
.upperside {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  background-color: #272a31;
  width: 100%;
  height: 30px;
  opacity: 0.9;
}

.upperside-ul {
  width: 40%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-right: 5%;
}

.upperside-item:hover {
  opacity: 0.7;
}

/* Navbar */
nav {
  width: 100%;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  position: relative;
}

.hamburger-menu-display {
  display: none;
}

.desktop-navbar {
  width: 100%;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  color: #272a31;
  padding: 5px 5%;
}

.navbar-ul {
  width: 70%;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
}

.desktop-nav-link {
  color: #272a31;
  font-weight: 600;
}

.desktop-navbar ul li {
  margin: 0 1%;
  white-space: nowrap;
}

.desktop-navbar ul li:hover {
  opacity: 0.7;
}

.main-logo:hover {
  opacity: 0.7;
}

.main-logo-img {
  width: 50px;
  height: 50px;
  opacity: 0.8;
}

/* First Section */
.main-content-headers {
  width: 80%;
}

.main-content-headers h2 {
  font-size: 2.5rem;
}

.main-content-headers h1 {
  font-size: 3.5rem;
}

.year {
  font-size: 4.5rem;
  margin-bottom: 5%;
}

.main-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.header-content {
  width: 80%;
  font-size: 1.25rem;
}

.infos {
  margin-top: 5%;
  margin-bottom: 0;
}

.bg-header-image {
  width: 80%;
}

.bg-header-image-rotate {
  width: 80%;
}

.date {
  font-size: 2rem;
}

.location {
  font-size: 1.25rem;
}

/* Main Program */
.program-items {
  opacity: 1;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.program-item {
  opacity: 0.8;
  width: 19%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 10px;
  margin: 0;
  flex-wrap: wrap;
}

.item-icon {
  width: auto;
  margin: 20px 0;
  color: #fff;
}

.item-header {
  width: auto;
}

.item-content {
  width: auto;
  margin: 20px 0;
  color: #fff;
}

.main-btn {
  display: none;
}

.see-program {
  display: block;
  color: #ec5242;
  font-size: 1.5rem;
  margin-top: 5%;
}

.see-program:hover {
  opacity: 0.7;
}

/* Speakers */
.speakers-btn {
  display: none;
}

.speakers-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
}

/* Partners */
.partners-heading {
  margin-top: 5%;
}

.partners-list {
  flex-wrap: nowrap;
}

.list-item {
  width: 120px;
  height: 120px;
}

/* Contact */
.footer {
  margin-top: 0;
}

.contact-details {
  justify-content: center;
  margin: 0;
}

.contact {
  margin-top: 0;
}

.rights {
  margin-top: 3%;
}

.ytu-logo {
  margin-right: 3%;
}

.adress {
  margin-left: 3%;
}

/* About Us */
.horizontal-line {
  width: 200px;
  margin-top: 1%;
}

.about-us {
  margin-bottom: 0;
  margin-top: 0;
}

.margin-top-big {
  margin-top: 5%;
}

.family-photo {
  margin-bottom: 0;
  margin-top: 0;
}

.about-us-content {
  font-size: 1.25rem;
}

/* Past Activities */
.past-activities {
  width: 100%;
  margin: 0;
}

.activities {
  width: 100%;
  display: flex;
  flex-direction: row;
  justify-content: space-around;
  align-items: center;
}

.past-content {
  margin-top: 0;
}

.act {
  width: 40%;
  font-size: 1.25rem;
}

.past-first-activity {
  width: 40%;
  min-height: 300px;
  background: url("https://monbien-events.com/wp-content/uploads/2018/03/conference_crop.jpg");
  background-size: cover;
  position: relative;
  opacity: 0.8;
  margin: 5% 0;
}

.first-activity-content {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  background-color: #ec5242;
  opacity: 0.8;
  color: #fff;
}

.past-second-activity {
  width: 40%;
  min-height: 300px;
  background: url("https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcREUyl4_ZFKff7UxDV8HlwuMtoVE_UqMxLljuhd3Ycm5QrvTOVNjYIhBMQaaqa2wxCSkIM&usqp=CAU");
  background-size: cover;
  position: relative;
  opacity: 0.8;
  margin: 5% 0;
}

/* Contact */
.contact-line {
  margin-bottom: 2%;
}

/* toggle for speakers */
.speakers-display {
  display: flex;
}