* {
    margin: 0;
    padding:0;
  }

  header{
    height: 60px;
    background-color: #ddd;
  }
  
  .first-block {
    height: 500px;
    background-color: #ddd;
  }
  

  .header-nav {
    background-color: pink;
    position: fixed;
    height: 60px;
    width: 100%;
  
    display: flex;
    flex-direction: row;
    justify-content: flex-end;
    align-items: center;
    font-family: monospace;
  }
  
  nav {
    margin-right: 5%;
  }

  a {
    color: #fff;
    text-decoration: none;
  }
  
  a:hover {
    color: black;
  }

body {
  background-color: #FFFAFA;
}

  h1 {
    font-size: 25px;
    font-family: monospace;
    color: #333333;
    margin: 10px;
    padding: 0;
    border-bottom: solid 3px #333333;
    display: inline-block;
    
  }

  h2 {
    font-size: 35px;
    font-family: monospace;
    color: #333333;
    padding: 0;
    margin: 50px;
    text-align: center;
    font-weight: lighter;
  }

  h3 {
    font-size: 20px;
    font-family: monospace;
    color: #333333; 
    margin: 10px;
  }

  h4 {
    font-size: 15px;
    font-family: monospace;
    color: #333333; 
    margin: 10px;
  }
  .marker_line40 { background:linear-gradient(transparent 40%, #fec1fe 0%); }

  .marker_line50 { background:linear-gradient(transparent 40%, #00d2e9 0%); }

  .marker_line60 { background:linear-gradient(transparent 40%, #FFFF88 0%); }

  p {
    font-family: monospace;
    font-size:15px;
    margin: 10px;
  }

#hash {
  margin: 10px;
  padding: 0;
  font-family: monospace;
  font-size:15px;
}

#others {
  margin: 10px;
  padding: 0;
  font-family: monospace;
  font-size:20px;
  text-align: center;
}


#first {
  margin: 50px;
  font-family: monospace;
  font-size:15px;
}
 

#last {
  margin: 20px;
  padding: 0;
  font-family: monospace;
  font-size:15px;
  text-align: center;
  line-height: 1.5;
}
 
/*   First block   */
#first-block {
    
    background-size: cover;
    width: 100%;
    height: 550px;
  
    display: flex;
    justify-content: center;
    align-items: center;
}
  
.title-container {
  text-align: center;
}
  

  /*   First block End   */