@import url('https://fonts.googleapis.com/css2?family=Sarabun:wght@200;400&display=swap');
@import url("https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.min.css");
body {
    margin: 0;
    font-family: 'Sarabun', sans-serif;
    font-size: 14px;
}

.fixed {
    position: sticky;
    top: 0px;
    z-index: 9999;
}

.navbar {
    overflow: visible;
    top: 0;
    width: 100%;
    padding: 0px;
    z-index: 99;
    color: #ffffff;
    background-color: #66c07c;
    margin-top: -21px;
}

.navbar-nav a {
    float: left;
    display: block;
    color: #292929;
    text-align: left;
    padding: 10px 10px;
    text-decoration: none;
    z-index: 99;
}

.navbar ul li a {
    color: #000000;
    z-index: 99;
}

.navbar ul li a:hover {
    background-color: #ffffff;
    color: #000000;
    z-index: 99;
}

.navbar ul li ul li a {
    color: #120450;
    z-index: 99;
    padding: 5px 5px;
    font-size: 14px;
}


.navbar ul li ul li a:hover {
    color: #120450;
    z-index: 99;
    background-color: #66c07c;
}

.bg-logo {
    background-image: url("../image/bg.jpg");
}

.color-pink {
    background-color: #e04ce0;
}

.color-black {
    color: #000000;
}

.active {
    background-color: #ffffff;
}
.active2 {
    background-color: #b4b3b3;
}
a {
    text-decoration: none;
}
.center {
    margin: 0;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
  }

  .center2{ 
  top: 50%;
  left: 50%;
  /* bring your own prefixes */
  transform: translate(-50%, -50%);
  }

#headline{
    margin-left: 5px; 
    height: 100px;
    width:80%;
    background-color: #f8e006c0;
    position: absolute;
   
}
#headline h1{
    font-size: 30px;
    font-weight: bold;
}

#timeline{
    margin-left: 81%; 
    height: 100px;
   /* background-color: #bac706c0;*/
    width:19%;
}
#timeTitle{
    /*font-weight: bold;*/
    text-align: center;
    background-color: #da7e06;
    margin: 0;
    width: 100%;
    padding: 13px;
    font-size: 18px;
    color: #ffffff;
}
#clock{
     
    text-align: center;
    background-color: #f78940;
    margin: 0;
    width: 100%;
    padding: 10px;
    
    font-size: 18px;
    color: #ffffff;
}
#logo {
    background-image: url("../image/logo-spt.png");
    width: 150px;
    height: 150px;
    position: absolute;
    background-size: 100% 100%;
    margin-top: -20px;

}



.image-border {
    border: #cccccc solid 1px;
}


.card-long {
    width: 35rem;
}

#main_about {
    /* background-color: #f5f5f5;*/
    width: 100%;
    margin: 0; 
   
}

#menu_about {
    margin-top: 0;
    padding: 5px;
    width: 20%;
    /* background-color: #ec7e7e;*/
    height: 1000px; 
    border-right: #b6b6b6 solid 1px;

    position: -webkit-sticky; /* for browser compatibility */
    position: sticky;
    top: 0px;
}

#menu_about li {
    list-style-type: none;
    cursor: pointer;
    margin-left: -32px;
    /* background-color: #66c07c;*/
    height: 30px;
    padding: 5px;
    margin-top: 1px;
}

#menu_about li a {
    color: #000000;
}

#menu_about li:hover {
    background-color: #dddddd;
}
#content_main { 
    padding: 5px;
    width: 80%;
    /* background-color: #eb9595; */ 
    margin-left: 20%;
    margin-top: -1000px; 
   
}
#content_about { 
    padding: 5px;
    width: 80%;

    position: -webkit-sticky; /* for browser compatibility */
    position: sticky;
    top: 40px;
   
}

#vision {

    min-height: 1000px; 
}

#hardware1 {
    min-height: 1000px;
}

#makeBy {
    min-height: 1000px;
}

.radius-0{
    border-radius: 0px;
}

@media screen and (max-width: 600px) {
    #logo {
        display: none;
    }

    .card-long {
        width: 18rem;
    }
}