* {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 1rem;
  line-height: 1.5;
  box-sizing: border-box;
  text-align: center;
}

html,
body {
  background-color: #f5f5f5;
  display: flex;
  flex-direction: column;
  height: 100vh;
}

.container {
  display: flex;
  flex-direction: column;
  margin: auto;
  justify-content: center;
  align-items: center;
}

.container:nth-child(2) {
  margin: auto 10% auto 10%;
}

.hiddenContainer {
  visibility: none;
}

h1 {
  font-size: calc(1.375rem + 1.5vw);
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-weight: 500;
  line-height: 1.2;
}

p {
  margin-top: 0;
}

form {
  width: 100%;
}

.inputGroup,
.inputBox {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  width: 100%;
}

.inputGroup {
  flex-direction: column;
}

.inputPrepend {
  display: -webkit-flex;
  display: flex;
  align-items: center;
  padding: 0.375rem 0.75rem;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
  color: #212529;
  text-align: center;
  white-space: nowrap;
  background-color: #e9ecef;
  border: 1px solid #ced4da;
  border-radius: 0.25rem;
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}

input {
  position: relative;
  flex: 1 1 auto;
  width: 1%;
  min-width: 0;
  display: block;
  padding: 0.375rem 0rem 0.375rem 0.5rem;
  font-size: 1rem;
  font-weight: 400;
  text-align: left;
  line-height: 1.5;
  color: #212529;
  background-color: #fff;
  background-clip: padding-box;
  border: 1px solid #ced4da;
  appearance: none;
  border-radius: 0.25rem;
  border-top-left-radius: 0rem;
  border-bottom-left-radius: 0rem;
  transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.invalid,
.invalid:focus {
  border: 1px solid red;
}
.invalid:focus {
  outline: none !important;
  box-shadow: 0 0 10px red;
}

.invalidMessage {
  margin: auto;
  margin-top: 0.25rem;
  color: red;
  font-size: 0.8em;
}

button {
  margin-top: 1rem;
}

.loadingBox,
.errorBox {
  margin: auto !important;
  background-color: lightskyblue;
  padding: 5px 10px 5px 10px;
  border-radius: 5px;
  border: 1px solid deepskyblue;
}

.errorBox {
  background-color: lightcoral;
  border: 1px solid crimson;
}

.errorText {
  line-height: 1;
}