body, html {
  height: 100%;
  margin: 0 0 0 0;
}

/* The hero image */
.hero-image {
/* Use "linear-gradient" to add a darken background effect to the image (photographer.jpg). This will make the text easier to read */
background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url("comsci2.jpg");

/* Set a specific height */
/* height: 100%; */

/* Position and center the image to scale nicely on all screens */
background-position: center;
background-repeat: no-repeat;
background-size: cover;
position: relative;
}

/* Place text in the middle of the image */
.hero-text {
text-align: center;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
color: white;
}

/* Navbar container */
.navbar {
    overflow: hidden;
    background-color: #333;
    /* background-color: whitesmoke;  */
    /* font-family: Arial; */
    font-family: "monaco", monospace;
    
  }

  /* Sticky nav ber */
  /* The sticky class is added to the navbar with JS when it reaches its scroll position */
.sticky {
    position: fixed;
    top: 0;
    width: 100%;
  }
  
  /* Add some top padding to the page content to prevent sudden quick movement (as the navigation bar gets a new position at the top of the page (position:fixed and top:0) */
  .sticky + .content {
    padding-top: 60px;
  }
  
  /* Links inside the navbar */
  .navbar a {
    float: left;
    font-size: 16px;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
  }

  
  /* The dropdown container */
  .dropdown {
    float: left;
    overflow: hidden;
  }
  
  /* Dropdown button */
  .dropdown .dropbtn {
    font-size: 16px;
    border: none;
    outline: none;
    color: white;
    padding: 14px 16px;
    background-color: inherit;
    font-family: inherit; /* Important for vertical align on mobile phones */
    margin: 0; /* Important for vertical align on mobile phones */
  }
  
  /* Add a red background color to navbar links on hover */
  .navbar a:hover, .dropdown:hover .dropbtn {
    background-color: #fc9483;
  }
  
  /* Dropdown content (hidden by default) */
  .dropdown-content {
    display: none;
    position: absolute;
    background-color: #f9f9f9;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    z-index: 1;
  }
  
  /* Links inside the dropdown */
  .dropdown-content a {
    float: none;
    color: black;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    text-align: left;
  }
  
  /* Add a grey background color to dropdown links on hover */
  .dropdown-content a:hover {
    background-color: #ddd;
  }
  
  /* Show the dropdown menu on hover */
  .dropdown:hover .dropdown-content {
    display: block;
  }


  /* Container holding the image and the text*/
.container {
    position: relative;
  }

  /* img text block */
  /* Bottom right text */
  .text-block-head {
    position: absolute;
    /* position:fixed; */
    bottom: 45%;
    right: 35%;
    background-color: rgb(31, 27, 27,0.8);
    /* background-color: rgb(252, 148, 131, 0.8); */
    /* opacity */
    /* opacity: 0.2; */
    color: white;
    padding-left: 20px;
    padding-right: 20px;
  }

  .text-block {
      /* position: absolute; */
      /* width: 80%;
      height: auto; */
      position: relative;
      color: #252222;
      padding-left: 15%;
      padding-right: 15%;
      /* background-color:#f9f9f9; */
  }
 

  /* .text-block-center {
    position: center;
    color: #252222;
    padding-left: 5%;
    padding-right: 30%; 
  } */

  .fontHead1 {
      font-family: "monaco", monospace;
      font-size: 28pt;
      color: white;
  }

  .fontHead2 {
    font-family: "monaco", monospace;
    font-size: 20pt;
    color: #fe7d6a;
  }

/* font thai css rules specific family */
  /* font-family: 'Pridi', serif; */
  .fontHeadTh {
    font-family: 'Pridi', serif;
    font-size: 20pt;
    color: #fe7d6a;
    /* color: #252222; */
  }
  .fontTh {
    font-family: 'Pridi', serif;
    font-size: 14pt;
    /* color: #252222; */
  }

  .fontRv {
    font-family: 'Pridi', serif;
    font-size: 12pt;
  }

  
  .buttonSeeMore {
    font-family: "monaco", monospace;
    color: #fff;
    display: block;
    width: 10%;
    border: none;
    background-color:  #252222;
    padding: 14px 28px;
    font-size: 14px;
    cursor: pointer;
    text-align: center;
    float:right;
    margin-right: 20%;
    /* margin-bottom: 0%; */
  }

  .buttonSeeMore:hover {

    color: #fff !important ;
    background-color: #fc9483 !important;
    
  }

  img {
    width: 60%;
    height: auto;
    display: block;   
    margin-right: auto; 
    margin-left: auto; 
  }

  .box {
    border-radius: 15px 15px 15px;
    background-color: #f6f3ef;
    width: 40%;
    height: 60%; 
    margin: auto;
    margin-top: 5%;
    /* margin-bottom: 5%; */
}

.container2 {
  /* padding: 15px 30px; */
  /* padding:  10px 30px 20px; */
  padding: 5% 10% 5% 10%;
}


.form-submit-button {
  background: #fc9483;
  color: white;
  border: 5px solid #f6f3ef;
  width: 20%;
  height: 20%;
  font-size: medium;
  font-family: 'Pridi', serif;
  margin: 5% 10% 0 75%;
  /* border-radius: 20px; */
  /* box-shadow: 5px 5px 5px #eee; */
  /* text-shadow: none; */
  }
.form-submit-button:hover {
  background: #fff;
  color: #252222;
  /* border: 5px solid #f6f3ef;
  width: 20%;
  height: 20%;
  font-size: medium;
  font-family: 'Pridi', serif; */
  /* margin: auto; */
  /* border-radius: 20px; */
  /* box-shadow: 5px 5px 5px #eee; */
  /* text-shadow: none; */
  }

  footer .font {
    font-family: "monaco", monospace;
    color: #252222;
    font-size: 8pt;
  }

  footer {

    /* background-color:#b4b4b4; */
    height: fit-content;
    margin-top: 10%;
    padding: 2% 5% 2% 10%;
  }