body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  font-family: Arial, sans-serif;
  background: url('https://i.ibb.co/VMPs7nN/bg.jpg') no-repeat;
  background-size: cover;
}

.button {
  width: 30%;
  background: rgba(255, 255, 255, 0.35);
  padding: 30px;
  border: 2px solid #fff;
  border-radius: 40px;
  text-align: center;
  color: #fff;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s ease-out;
}

.button:hover {
  background: rgba(255, 255, 255, 0.5);
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  transition: opacity 0.5s;
  visibility: hidden;
  opacity: 0;
}
.overlay:target {
  visibility: visible;
  opacity: 1;
}

.popup {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 70px auto;
  padding: 40px;
  background: #fff;
  border-radius: 10px;
  width: 40%;
  height: 60%;
  position: relative;
  transition: all 1s ease-in-out;
}

.popup-img {
  width: 80%;
}

.popup h2 {
  margin-top: 0;
  color: #333;
  font-family: Arial, sans-serif;
}
.popup .close {
  position: absolute;
  top: 20px;
  right: 30px;
  transition: all 200ms;
  font-size: 50px;
  font-weight: bold;
  text-decoration: none;
  color: #333;
}
.popup .close:hover {
  opacity: 0.7;
}
.popup .content {
  margin-bottom: 30px;
}