@import url("https://fonts.googleapis.com/css?family=Open+Sans:400,500&display=swap");

* {
  box-sizing: border-box;
}

:root {
  --mybkgnd: #3b74ef;
  --hdr-backgnd: #d7d7d7;
  --success: #2ecc7a;
  --error: #e74c3c;
}

body {
  background-color: var(--mybkgnd);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  margin: 0 auto;
  font-family: 'Open Sans', san-serif;
}

.container {
  background-color: white;
  border-radius: 10px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
  width: 400px;
  max-width: 100%;    /* for small screens */
  overflow: hidden;   /* to make sure header's square corners don't show */
}

.header {
  background-color: var(--hdr-backgnd);
  border-bottom: 1px solid #f0f0f0;
  padding: 20px 40px;
}

.header h2 {
  margin: 0;
}

.form {
  padding: 30px 40px;
}

.form-control {
  margin-bottom: 10px;
  padding-bottom: 20px;
  position: relative;
}

.form-control label {
  display: inline-block;
  margin-bottom: 5px;
}

.form-control input {
  border: 2px solid #f0f0f0;
  border-radius: 5px;
  display: block;
  font-family: inherit;   /* so the default will be over written */
  font-size: 1rem;
  width: 100%;
  padding: 10px;
  color: black;
}

.form-control.success input {
  border-color: var(--success);
}

.form-control.error input {
  border-color: var(--error);
}

.form-control i {
  position: absolute;
  top: 40px;
  right: 10px;
  visibility: hidden;
}

.form-control.success i.fa-check-circle {
  visibility: visible;
  color: var(--success);
}

.form-control.error i.fa-exclamation-circle {
  visibility: visible;
  color: var(--error);
}

.form-control small {
  position: absolute;
  bottom: 0;
  left: 0;
  visibility: hidden;
}

.form-control.error small {
  color: var(--error);
  visibility: visible;
}

.form button {
  background-color: var(--mybkgnd);
  border: 2px solid var(--mybkgnd);
  border-radius: 5px;
  color: white;
  display: block;
  font-family: inherit;
  font-size: 1.2rem;
  padding: 10px;
  text-transform: uppercase;
  width: 100%;

}