html, body {
  height: 100%;
}

.columna_1 {
  position: absolute;
  top: 0;
  right: 70%;
  left: 0;
  bottom: 0;
  background-color: #d81e05;
}

.columna_2 {
  position: absolute;
  top: 0;
  left: 30%;
  right: 0;
  bottom: 0;
  background-color: #fff;
}

.contenedor_login {
  position: absolute;
  top: 50%;
  margin-top: -110px;
  width: 400px;
  left: 50%;
  margin-left: -200px;
}

.contenedor_mensaje {
  position: absolute;
  top: 50%;
  margin-top: -100px;
  width: 400px;
  left: 50%;
  margin-left: -200px;
  color: #fff;
  font-size: 16px;
  text-align: center;
}

.titulo {
  font-size: 36px;
  margin-bottom: 30px;
}

.contenedor_mensaje img {
  height: 50px;
}

.logo_login {
  display: none;
}

.bg-danger {
  padding: 15px;
  margin-top: 20px;
}

.pie {
  position: absolute;
  left: 20px;
  right: 0;
  bottom: 0;
  height: 30px;
  line-height: 30px;
  font-size: 12px;
}

.aviso {
  position: absolute;
  left: 20px;
  right: 20px;
  top: 20px;
  height: 40px;
  line-height: 40px;
  font-size: 14px;
  border: 1px solid #cbb;
  text-align: center;
  background-color: #fbfbfb;
}

@media (max-width: 990px) {

  .columna_1 {
    right: 60%;
  }

  .columna_2 {
    left: 40%;
  }

}

@media (max-width: 790px) {

  .columna_1 {
    display: none;
  }

  .columna_2 {
    left: 0;
  }

  .logo_login {
    display: block;
    font-size: 14px;
    color: #d81e05;
    margin-bottom: 30px;
    text-align: center;
  }

  .logo_login img {
    height: 30px;
  }

  .contenedor_login {
    width: 300px;
    margin-left: -150px;
  }

}