index.css

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600&display=swap');
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
}
body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: #8b2eee;
}
.wrapper {
  width: 450px;
  overflow: hidden;
  padding: 28px;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 10px 25px rgba(0,0,0,0.06);
}
.wrapper .pass-field {
  height: 65px;
  width: 100%;
  position: relative;
}
.pass-field input {
  width: 100%;
  height: 100%;
  outline: none;
  padding: 0 17px;
  font-size: 1.3rem;
  border-radius: 5px;
  border: 1px solid #999;
}
.pass-field input:focus {
  padding: 0 16px;
  border: 2px solid #06f723;
}
.pass-field i {
  right: 18px;
  top: 50%;
  font-size: 1.2rem;
  color: #999;
  cursor: pointer;
  position: absolute;
  transform: translateY(-50%);
}
.wrapper .content {
  margin: 20px 0 10px;
}
.content p {
  color: #333;
  font-size: 1.3rem;
}
.content .requirement-list {
  margin-top: 20px;
}
.requirement-list li {
  font-size: 1.3rem;
  list-style: none;
  display: flex;
  align-items: center;
  margin-bottom: 15px;
}
.requirement-list li i {
  width: 20px;
  color: #aaa;
  font-size: 0.6rem;
}
.requirement-list li.valid i {
  font-size: 1.2rem;
  color: #06f723;
}
.requirement-list li span {
  margin-left: 12px;
  color: #333;
}
.requirement-list li.valid span {
  color: #999;
}

@media screen and (max-width: 500px) {
  body, .wrapper {
    padding: 15px;
  }
  .wrapper .pass-field {
    height: 55px;
  }
  .pass-field input, .content p  {
    font-size: 1.15rem;
  }
  .pass-field i, .requirement-list li {
    font-size: 1.1rem;
  }
  .requirement-list li span {
    margin-left: 7px;
  }
}