* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Noto Sans Thai", sans-serif;
  scroll-behavior: smooth;
}

.navigation-tab {
  width: fit-content;
}

.navigation-tab a,
.navigation-tab span {
  padding: 0 0.5vw;
  font-size: 18px;
  text-decoration: none;
  color: #000;
}

.navigation-tab a:hover {
  color: #a72c32;
  transition: 0.5s;
  font-weight: 600;
}

.carousel-imageR-1 {
  background-image: url("../images/Research/picR1.jpg");
  background-size: cover;
}

.carousel-imageR-2 {
  background-image: url("../images/Research/picR2.jpg");
  background-size: cover;
}

.carousel-imageR-3 {
  background-image: url("../images/Research/picR3.jpg");
  background-size: cover;
}
.carousel-imageR-4 {
  background-image: url("../images/Research/picR4.jpg");
  background-size: cover;
}
.carousel-imageR-5 {
  background-image: url("../images/Research/picR5.jpg");
  background-size: cover;
}

.carousel-imageR-6 {
  background-image: url("../images/Research/picR6.jpg");
  background-size: cover;
}

.carousel-imageR-7 {
  background-image: url("../images/Research/picR7.jpg");
  background-size: cover;
}
.carousel-imageR-8 {
  background-image: url("../images/Research/picR8.jpg");
  background-size: cover;
}
.carousel-imageR-9 {
  background-image: url("../images/Research/picR9.jpg");
  background-size: cover;
}