* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Roboto", sans-serif;
}
body {
  background-color: #efefef;
}
.app {
  height: 100vh;
  padding: 50px 20px;
  text-align: center;
}
.app .header {
  width: 100%;
  margin-bottom: 100px;
}
.app .header .title {
  margin: 25px auto 50px;
  font-size: 40px;
  font-weight: 700;
}
.app .header form {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
}
.app .header .search-input {
  padding: 20px;
  flex: 1;
  border-radius: 10px;
  border: none;
  outline: none;
  font-size: 18px;
}
.app .header .search-input::placeholder {
  transition: 0.5s;
}
.app .header .search-input:focus::placeholder {
  opacity: 0;
}
.app .header .search-btn {
  padding: 20px;
  background-color: #409fff;
  border: none;
  border-radius: 10px;
  font-size: 18px;
  color: #fff;
  cursor: pointer;
  transition: 0.5s;
}
.app .header .search-btn:hover {
  background-color: #40a0ffc4;
}
.app .body {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 50px;
}
.app .body .card {
  padding: 20px;
  border-radius: 10px;
  background-color: #fff;
  box-shadow: 0 0 10px #ccc;
  transition: 0.5s;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.app .body .card:hover {
  transform: translateY(-10px);
  box-shadow: 0 0 20px #ccc;
}
.app .body .card img {
  max-width: 100%;
  max-height: 250px;
  border-radius: 6px;
  margin-bottom: 20px;
  cursor: pointer;
  opacity: 0.9;
  transition: 0.5s;
}
.app .body .card img:hover {
  opacity: 1;
}
.app .body .card a {
  display: block;
  text-decoration: none;
  color: #444;
  font-size: 14px;
  line-height: 1.6;
  transition: 0.5s;
}
.app .body .card a:hover {
  color: #409fff;
}
.more-btn {
  padding: 15px 30px;
  background-color: #409fff;
  border: none;
  border-radius: 10px;
  font-size: 18px;
  color: #fff;
  cursor: pointer;
  transition: 0.5s;
  margin-bottom: 100px;
}
.more-btn.active {
  padding: 15px 30px;
  background-color: #409fff;
  border: none;
  border-radius: 10px;
  font-size: 18px;
  color: #fff;
  cursor: pointer;
  transition: 0.5s;
  margin-bottom: 100px;
}
.more-btn:hover {
  background-color: #40a0ffc4;
}

@media (max-width: 767px) {
  .app .header form {
    width: 100%;
    margin: 0 auto;
    gap: 10px;
  }
  .app .header .search-input,
  .app .header .search-btn {
    padding: 12px;
  }
}