body {
  color: #ffffff;
  background-color: rgb(0, 0, 0);
  font-family: 'Roboto', sans-serif;
  padding: 50px;
}

.categoriavideos {
  display: flex;
  overflow-x: auto;
  gap: 10px;
  border-radius: 8px;
}

section {
  padding-left: 20px;
  padding-right: 20px;
}

.categoriavideos img {
     opacity: 0.5;
     border-radius: 8px;
  transition: opacity 0.3s ease; 
}

.categoriavideos img:hover {
     opacity: 1.0;
}