*{
  margin: 0;
  padding: 0;
  font-family: sans-serif;
}
body{
  background: #000;
}
.container{
  width: 360px;
  height: 400px;
  margin: 8% auto;
  background: #fff;
  border-radius: 5px;
  position: relative;
  overflow: hidden;
}
h3{
  text-align: center;
  margin-bottom: 40px;
  color: #777;
}
.container form{
  width: 280px;
  position: absolute;
  top: 100px;
  left: 40px;
  transition: .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, #9f1dad, #ce56db);
  border-radius: 30px;
  border: 0;
  outline: none;
  color: #fff;
  cursor: pointer;
  font-weight: 700;
  font-size: 0.8em;
}
#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 #000;
  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, #9f1dad, #ce56db);
}
small{
  color: #fff;
  font-weight: 700;
  font-size: 0.8em;
}
#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 #ce56db;
}