.sticky_header{
  position: sticky;
  top: 0;
  z-index: 1000; /* higher than other elements */
}

#add_post {
  width: 100%;
  height: 4vh;
  background-color: #b00;
  text-align: center;

  /* Flexbox centering */
  display: flex;
  justify-content: center; /* horizontal */
  align-items: center;     /* vertical */
}

#add_post:hover {
  cursor: pointer;
}

h1#add{
  font-family: Arial, Helvetica, sans-serif;
  color: white;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5); /* <- This is your shadow */
  transition: background-color 0.2s ease;
  padding: auto;
}

.lander_body {
    margin: 0;
    width: 100vw; /* Full viewport width */
    height: 100vh; /* Full viewport height */
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column; /* stack content vertically */
    font-family: 'Arial', sans-serif; /* default font family for whole page */
    /* background-color: #f5f5f5; optional: light background */
  }
  
  .lander_text_main {
    font-size: 2rem; /* adjust as needed */
    text-align: center;
    /* padding-top: 10vh; */
    padding-bottom: 5vh;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 3vh;
    font-weight: bolder;
    color: rgb(255, 255, 255);
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.8);
  }

  .sub_lander_text_main {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 4.5vh;
    font-weight: bold;
  }
  
  .sub_lander_text {
    font-size: 1rem;
    width: 50vh;
    /* background-color: darkcyan; */
    margin: 0 auto; /* centers it horizontally */
    text-align: center; /* optional: centers text inside */
    padding: 1vh;
    padding-top:1.5vh;
    border-radius: 5px; /* optional: just looks nice */
    color: rgb(255, 255, 255); /* optional: improves readability */
    font-weight: lighter;
  }


  a.contact_block {
    text-decoration: none;
    color: inherit;
    display: inline-block; /* not block! keeps size tight */
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    padding: 0; /* remove extra padding */
  }
  
  .contact_text {
    font-size: 1.5rem;
    background-color: rgb(139, 0, 7);
    padding: 0.5em 1em; /* tighter padding around text */
    border-radius: 5px;
    color: white;
    font-weight: bold;
    font-family: Arial, Helvetica, sans-serif;
    text-align: center;
    margin: 0 auto;
    display: inline-block;
  }