.content-container {
  max-width: 800px;
  margin: 0 auto;
}

h1 {
  text-align: center;
  margin-bottom: 1em;
}
.message {
  text-align: center;
}

.form-row {
  display: grid;
}
.form-row + .form-row {
  margin-top: 1em;
}

input[type=text],
input[type=email],
input[type=password] {
  padding: .5em 1em;
}

.form-row.btn-area {
  text-align: center;
}
.btn {
  min-width: 280px;
  width: fit-content;
  border-radius: 5px;
  margin-top: 2em;
  margin-left: auto;
  margin-right: auto;
  padding: .5em 1em;
  border: 1px solid;
  display: block;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}
.pwreset-message {
  margin-top: .5em;
  text-align: center;
  font-size: 14px;
}
.btn-area.new-regist {
  text-align: center;
  margin-top: 2em;
}