* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Quicksand", sans-serif;
  }
  .header {
    width: 100%;
    height: 100px;
    padding-left: 10%;
    padding-right: 10%;
    display: flex;
    align-items: center;
    position: fixed;
    z-index: 9999999;
  }
  .principal-post{
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    z-index: 999999;
  }
  .principal-post iframe{
    width: 100%;
    height: 100%;
  }
  @media (max-width: 768px) {
    .navbar {
      position: fixed;
      padding-left: 10%;
      padding-right: 10%;
      z-index: 9999999;
      display: block;
    }
  }