:root {
  --success--color: rgb(5, 204, 72);
  --error--color: crimson;
}

* {
  box-sizing: border-box;
}

body {
  font-family: "Source Sans Pro", sans-serif;
  background-color: rgb(243, 215, 243);
  display: flex;
  align-items: center;
  justify-content: center;
  vertical-align: middle;
  min-height: 100vh;
  margin: 0 auto;
}
.form-container {
  background-color: #fff;
  border-radius: 5px;
  box-shadow: 0 2px 10px rgba(5, 5, 5, 0.3);
  width: 40%;
}

.form {
  padding: 30px;
}

h2 {
  text-align: center;
  margin: 0 0 20px;
  color: rebeccapurple;
}
.form-control {
  margin-bottom: 10px;
  padding-bottom: 20px;
  position: relative;
}

.form-control label {
  color: #777;
  display: block;
  margin-bottom: 5px;
}

.form-control input {
  border: 1px solid rebeccapurple;
  border-radius: 8px;
  display: block;
  width: 100%;
  padding: 10px;
  font-size: 14px;
}
.form-control input:focus {
  outline: 0;
  border-color: rgb(174, 48, 238);
}
.form-control.success input {
  border-color: var(--success--color);
}
.form-control.error input {
  border-color: var(--error--color);
}
.form-control span {
  color: var(--error--color);
  position: absolute;
  bottom: 0;
  left: 10px;
  visibility: hidden;
}
.form-control.error span {
  visibility: visible;
}
.error {
  border-color: var(--error--color);
  visibility: visible;
}
.form button {
  cursor: pointer;
  background-color: rebeccapurple;
  border: 2px solid rebeccapurple;
  border-radius: 30px;
  color: #fff;
  display: block;
  font-size: 16px;
  padding: 10px;
  width: 80%;
  margin: 0 auto;
  margin-top: 20px;
}

.form button:focus {
  outline: 0;
  border: 0;
}

.form button:hover {
  background-color: rgb(147, 81, 212);
  border: 2px solid rgb(147, 81, 212);
}

@media (min-width: 0) and (max-width: 767px) {
  .form-container {
    width: 70%;
  }
  .form-control label,
  .form-control input {
    font-size: 12px;
  }
}

@media (min-width: 768px) and (max-width: 1024px) {
  .form-container {
    width: 50%;
  }
}