layout.css

@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;700&display=swap');
* {
  font-family: 'Roboto', sans-serif;
  color: #fff;
}
body {
  background: #000;
}
#estrutura_web {
  width: 600px;
  margin: auto;
}
#estrutura_web h2 {
  font-size: 20px;
  font-weight: 700;
  color: #F9ED32;
  text-transform: uppercase;
  padding: 20px 0;
}







.campo_contato {
  border: dashed 2px #F9ED32 ;
}
.campo_contato legend {
  font-size: 16px;
  text-transform: uppercase;
  color: #F9ED32;
}
.campo_contato .campo_form {
  border-bottom: solid 1px #f9ec324d;
  margin-bottom: 15px;
}
.campo_contato .campo_form::placeholder {
  color: #f9ec324d;
}



.checkbox {
  cursor: pointer;
}
.checkbox input{
  display: inline-block;
  width: 20px;
} 
#estrutura_web button {
  background: #F9ED32;
  width: unset;
  padding: 10px 50px;
  margin-top: 20px;
  color: #000;
  text-transform: uppercase;
  font-weight: 700;
}