style.css

* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: "Poppins", sans-serif;
  }
  body {
    background-color: #262433;
  }
  .container {
    width: 31.25em;
    background-color: #f8f8f8;
    padding: 1.4em 3.75em;
    position: absolute;
    transform: translate(-50%, -50%);
    top: 50%;
    left: 50%;
    border-radius: 0.7em;
    box-shadow: 0 1em 4em rgba(212, 234, 255, 0.2);
  }
  h2{
    text-align: center;
    font-size: 32px;
    margin-bottom: 30px;
    color: lightblack;
  }
  input,
  #submit {
    border: none;
    outline: none;
    display: block;
  }
  input {
    width: 100%;
    background-color: transparent;
    margin-bottom: 2em;
    font-size: 20px;
    padding: 1em 0 0.5em 0.5em;
    border-bottom: 2px solid #202020;
  }
  #submit {
    position: relative;
    left: 0;
    font-size: 1.1em;
    width: 7em;
    background-color: #3492eb;
    color: white;
    padding: 0.8em 0;
    margin-top: 2em;
    border-radius: 0.3em;
  }
  #message-ref {
    font-size: 0.9em;
    margin-top: 1.5em;
    color: #34bd34;
    visibility: hidden;
  }