styles.css

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body{
  background: url("trip-bg.jpg");
  width: 100%;
}

img {
  width: 100%;
  height: 100%;
  position: absolute;
  z-index: -1;
  opacity: 0.6;
  background-position: cover;
}

.container {
  max-width: 80%;
  /* background-color: rgb(96, 203, 217); */
  padding: 34px;
  margin: auto;
  justify-content: center;
}

.container h1 {
  text-align: center;
  border: 2px solid black;
  background-color: transparent;
  border-radius: 8px;
  width: 80%;
  margin: auto;
  /* margin auto is for making in center */
}

.container p {
  text-align: center;
  margin: 10px;
}

input,
textarea {
  display: block;
  flex-direction: column;
  margin: 10px;
  height: 38px;
  width: 100%;
  border-radius: 12px;
  padding: 12px;
  border-style: ridge;
  font-size: 1rem;
  outline: none;
  /* background-color: white; */
  opacity: 0.6;
  font-weight: bold;
}

textarea {
  width: 100%;
  height: 100px;
  border: 2px solid black;
}

.button {
  display: flex;
  justify-content: center;
}

.btn {
  padding: 10px;
  font-size: 1em;
  border-radius: 12px;
  color: white;
  margin: 10px;
  cursor: pointer;
  width: 100px;
  border: 2px solid gray;
}

.btn:nth-last-child(2) {
  background-color: green;
}

.btn:nth-last-child(1) {
  background-color: red;
}