* {
  box-sizing: border-box;
  font-size: 20px;
}
form {
  border-radius: 5px;
}
.form label,
input,
textarea,
button {
  display: block;
  font-family: sans-serif;
}
label {
  padding: 10px 0px;
}
legend {
  font-weight: bold;
  font-family: sans-serif;
  padding: 0;
}
fieldset {
  border: 0px;
  padding-top: 0px;
  padding-bottom: 0px;
}
textarea {
  resize: vertical;
}
.rules input {
  display: inline;
  width: 13px;
}
form {
  max-width: 450px;
  margin: 30px;
  max-height: auto;
  border: 1px #000 solid;
  padding: 20px 15px;
}
input,
textarea {
  border-radius: 5px;
  border-style: solid;
  border-width: 1px;
  margin-top: 5px;
  padding-left: 10px;
  width: 300px;
}
button {
  border-radius: 5px;
  border-style: none;
}