*{
  box-sizing: border-box;
}
body {
  overflow: hidden;
  height: 100vh;
  font-family: sans-serif;
}
.containerMain {
  padding-top: 90px;
  display: flex;
  height: 100vh;
  flex-direction: row;
  position: relative;
}

.right {
  position: sticky;
  width: 45%;
  height: 100vh;
  top: 0;
  background-color: #white;
  align-items: center;
  overflow: hidden;
}

.center {
  flex: 1;
  background-color: #f2f2f2;
  overflow: auto;
}


ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

li {
  padding: 12px;
  border-bottom: 1px solid #ddd;
}
.image {
  background-color: #f2f2f2;
  text-align: center;
  margin: 10px;
}

.image img {
  max-width: 100%;
  height: auto;
  max-height: 200px;
  object-fit: contain;
  margin: 30px;
}
.bttFlex{
display: flex;
}
.btt{
margin-left: 30px;
padding: 20px;
}
.button-style {
  padding: 10px 20px;
  background-color: white;
  color: #6c757d;
  border: 1px solid #6c757d;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 1rem;
}

.button-style:hover {
  background-color: #6c757d;
  color: white;
}

@media (max-width: 768px) {
  .containerMain {
    padding-top: 80px;
    flex-direction: column;

  }

  .center {
    height: 100vh;
    overflow-y: auto;
  }

  .right {
    order: -1;
    position: sticky;
    top: 0;
    width: 100%;
    min-width: unset;
    height: auto;
    border-top: 1px solid #ccc;
     z-index: 5;
  }
  .image img {
    width: 250px;
    margin: 5px;
    padding-left: 70px;
  }
}

    .loading-screen {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.5);
      display: flex;
      justify-content: center;
      align-items: center;
      color: white;
      font-size: 20px;
      z-index: 9999;
    }

    .loading-message {
      text-align: center;
      background-color: rgba(0, 0, 0, 0.8);
      padding: 20px;
      border-radius: 10px;
    }

footer {
  bottom: 0;
  width: 100%;
  background: #0dcaf0;
  color: #212529;
  padding: 20px;
  text-align: center;
  z-index: 1000;
}