.formulario {
  background: #333;
  width: 400px;
  padding: 10px 20px;
  box-sizing: border-box;
  border-radius: 8px;
  margin-left: 5%;
}
.formulario h2 {
  color: white;
  text-align: center;
  margin: 0px;
  margin-bottom: 20px;
}
.formulario input,
textarea {
  width: 100%;
  margin-bottom: 20px;
  padding: 8px;
  box-sizing: border-box;
  font-size: 17px;
  border: none;
}
.formulario textarea {
  min-height: 100px;
  max-height: 400px;
  max-width: 100%;
}
#btnEnviar {
  background: #133f7f;
  color: white;
  font-size: 20px;
}
#btnEnviar:hover {
  cursor: pointer;
  background: #0069ff;
  transition: 0.5s;
}
.divFormulario {
  display: flex;
  justify-content: center;
  margin-top: 10px;
}

.contenedorContacto {
  width: 100%;
  margin: 0 auto;
  background: white;
  padding-bottom: 1em;
}
.factura {
  background: #333;
  width: 100%;
  padding: 10px 20px;
  box-sizing: border-box;
  border-radius: 8px;
}
.factura input {
  width: 48%;
  padding: 8px;
  box-sizing: border-box;
  font-size: 20px;
  border: none;
}
#btnFactura {
  width: 20%;
  background: #e8551c;
  color: white;
}
#btnFactura:hover {
  cursor: pointer;
  background: #f07341;
  transition: 0.5s;
}
.btnDetalle {
  padding: 1em;
  background: #e8551c;
  color: white;
  border: none;
  border-radius: 15px 15px 15px 15px;
  -moz-border-radius: 15px 15px 15px 15px;
  -webkit-border-radius: 15px 15px 15px 15px;
  border: 0px solid #000000;
}
.btnDetalle:hover {
  cursor: pointer;
  background: #f07341;
  transition: 0.5s;
}

@media (max-width: 1000px) {
  .divFormulario {
    width: 100%;
    display: inline-block;
  }
  .formulario {
    margin-top: 50px;
    width: 100%;
    margin-left: auto;
  }
  iframe {
    width: 100%;
    height: 400px;
  }
  #btnFactura {
    font-size: 15px;
    width: 50%;
    background: #e8551c;
    color: white;
  }
  .factura input {
    font-size: 15px;
  }
}