.container-fluid{
  width: 100vw;
}

#btn-portal {
  transition: transform 0.5s ease;
  z-index: 100;
}

#btn-portal:hover{
  transform: scale(1.1);
}

#btn-siged {
  transition: transform 0.5s ease;
  z-index: 100;
}

#btn-siged:hover{
  transform: scale(1.1);
}

.margin_mesa{
  display: none;
  visibility: hidden;
}

.padin{
  padding: 10px;
    margin: auto;
}

#form-container {
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transition: opacity 1s ease, max-height 0.8s ease;
}

#form-container.visible {
  opacity: 1;
  max-height: 500px; /* o un valor suficientemente alto */
}

.login{
  margin-bottom: 20px;
}

.cabecera{
  position: relative;  
  padding: 0;
}

.btn_volver{
  width: 100px;
  max-width: 100px;
  display: none;
  position: absolute;
  right: 15px;
  bottom: -45px;
}



@media screen and (max-width: 768px){
  .margin_mesa{
    margin-bottom: 10%;
  }  
}