.complex_form {
  
  
    border-radius: 10px;
    
    border: 2px #0f244e solid;
    padding: 20px 10px 10px 10px;
    display: flex;
    flex-direction: column;
    
    align-self: start;
    
  }
  
  
  .form-content {
    
    display: flex;
    flex-direction: column;
    max-height: 1000px;
    opacity: 1;
    overflow: hidden;
    transition: max-height 0.4s ease, opacity 0.4s ease;
  }
  
  .form-content.hidden {
    max-height: 0 !important;
    opacity: 0 !important;
    padding: 0 !important;
  }
  
  .complex_form .form_title {
    font-size: 20px;
    font-weight: bold;
    margin: -20px -10px 20px -10px;
    padding: 10px 0px 10px 25px;
    color: black;
    background-color: white;
    border-radius: 7px 7px 0px 0px;
  }
  
  .complex_form .form_radio {
    display: flex;
    justify-content: flex-start;
    align-items: center;
  }
  
  .complex_form .form_element {
    margin-top: 10px;
    margin-bottom: 10px;
    font-size: 20px;
    border-radius: 10px;
    padding: 5px 10px 5px 10px;
  }
  
  
  .complex_form .form-title-row{
    display: flex; 
    justify-content: space-between;
  }
  
  
  
  /* This snippet of code was generated using: http://css3buttongenerator.com/ */
  
  .btn {
    border-radius: 20px;
    text-align: center;
    font-size: 18px;
    color: #3c3d3f;
    background: #ffffff;
    border: 2px #3c3d3f solid;
    padding: 10px 20px 10px 20px;
  }