style.css

* {
  max-width: 100%;
}

html {
  font-size: 100%;
  padding: 5%;
}

body {
  color: #6a737d;
  font-size: 16px;
  font-size: 1rem;
  line-height: 1;
  min-width: 360px;
  max-width: 480px !important;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 400;
}

a {
  text-decoration: none;
}

p {
  color: #6a737d;
  font-size: 0.857142857rem;
  line-height: 1.4;
}

.flex-row {
  display: flex;
  flex-direction: row;
}

.flex-column {
  display: flex;
  flex-direction: column;
}

header {
  color: #0288D1;
}

h1 {
  font-size: 2rem;
  font-weight: 600;
  margin: 0px 0px 15px 0px;
}

.btn-primary {
  width: 100%;
  color: #fff;
  background-color: #0288D1;
  padding: 10px 25px;
  border: 0px;
  border-radius: 5px;
}

.btn-neutral {
  width: 100%;
  background-color: #eee;
  padding: 10px 25px;
  border: 1px solid #ccc;
  border-radius: 5px;
}

input::placeholder {
  color: #ccc;
  font-size: 0.857142857rem;
  font-style: italic;
  opacity: 1; /* Firefox */
}

input[type = "url"] {
  font-size: 1rem;
  height: 25px;
  background-color: #f2f2f2;
  padding: 5px;
  border: 0px;
  border-radius: 5px;
}

.toggle-activation-wrapper {
  margin: 3% 0;
}

form {
  margin: 10px 0;
}

footer {
  text-align: center;
}