.maincontent {
padding:0;
position:relative;
max-width:100%;
border:0;
}

img{
    height:auto;
    width:100%;
}
.carousel-container {
  position: relative;
  width: 80%;
  margin: 0 auto;
  overflow: hidden;
}

.carousel {
  display: flex;
  transition: transform 0.5s ease;
}

.review {
  flex: 0 0 auto;
  width: 100%;
}

button {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
}

.prev {
  left: 10px;
}

.next {
  right: 10px;
}