* {
  margin: 0;
  padding: 0;
  font-family: "Courier New", Courier, monospace;
}
body {
  height: 100vh;
  background-image: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.4)),
    url(bg.jpg);
  background-repeat: no-repeat;
  background-position: center;
  background-attachment: fixed;
  background-size: cover;
}
.container {
  width: 360px;
  height: 400px;
  margin: 8% auto;
  background: #fff;
  border-radius: 30px;
  position: relative;
  overflow: hidden;
}
h3 {
  text-align: center;
  margin-bottom: 40px;
  color: #777;
}
.container form {
  width: 280px;
  position: absolute;
  top: 100px;
  left: 40px;
  transition: 0.5s;
}
form input {
  width: 100%;
  padding: 10px 5px;
  margin: 5px 0;
  border: 0;
  border-bottom: 1px solid #999;
  outline: none;
  background: transparent;
}
::placeholder {
  color: #777;
}
.btn-box {
  width: 100%;
  margin: 30px auto;
  text-align: center;
}
form button {
  width: 110px;
  height: 35px;
  margin: 0 10px;
  background: linear-gradient(to right, coral, orange);
  border-radius: 30px;
  border: 0;
  outline: none;
  color: #fff;
  cursor: pointer;
}
#form2 {
  left: 450px;
}
#form3 {
  left: 450px;
}
.step-row {
  width: 360px;
  height: 40px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  box-shadow: 0 -1px 5px -1px crimson;
  position: relative;
}
.step-col {
  width: 120px;
  text-align: center;
  color: #333;
  position: relative;
}
#progress {
  position: absolute;
  height: 100%;
  width: 120px;
  background: linear-gradient(to right, coral, orange);
  transition: 1s;
}
#progress::after {
  content: "";
  height: 0;
  width: 0;
  border-top: 20px solid transparent;
  border-bottom: 20px solid transparent;
  position: absolute;
  right: -20px;
  top: 0;
  border-left: 20px solid orange;
}