* {
  box-sizing: border-box;
  font-family: Helvetica, sans-serif;
  font-size: 16px;
}

html,
body {
  min-height: 100vh;
  background-color: #212529;
  color: #fff;
}

.body__main_block {
  margin: auto;
}

.body__main_block__base_title {
  font-size: 3rem;
  margin-top: 1.25rem;
  margin-bottom: 1.875rem;
}

.body__main_block__second_title {
  font-size: 2rem;
  margin-bottom: 1.875rem;
}

.body__main_block__third_title {
  font-size: 1.5rem;
  font-weight: 100;
}

input,
select {
  background-color: #212529;
  border: solid 1px #767676;
  font-size: 1rem;
  height: 50px;
  color: #fff;
}

select {
  padding: 0 20px;
}

input {
  padding: 15px 20px;
}

ul {
  list-style-type: none;
}

li {
  font-size: 0.8rem;
  color: #ef4444;
}

ul,
li {
  margin: 0;
  padding: 0;
}

input,
select {
  width: 100%;
}

p {
  margin-bottom: 1.5rem;
}

.line_group {
  display: flex;
  column-gap: 0.1rem;
  width: 100%;
}

.row_two_fields_first {
  width: 33.3%;
}

.row_two_fields_second {
  width: calc(100% - 33.3%);
}

.child_birthday {
  width: 45%;
}

hr {
  height: 2px;
  width: 100%;
  border: none;
  background-color: #fff;
}

button {
  cursor: pointer;
  font-size: 1.2rem;
  background-color: #b9ff41;
  color: #212529;
  padding: 15px;
  border-radius: 10px;
  border: none;
  margin-right: 20px;
}

a {
  color: #fff;
  font-size: 1.2rem;
  text-decoration: none;
}

a::visited {
  color: #fff;
}

p:last-child {
  margin-top: 2rem;
}

.base_error {
  color: #ef4444;
  font-size: 1.5rem;
  font-weight: 100;
}

.success {
  color: #b9ff41;
  font-size: 1.5rem;
  font-weight: 100;
}