.hide_me {
    visibility: hidden;
}
  
html {
    background-color: #999;
}
  
body {
    font-family: Open Sans, sans-serif;
}
  
/* ************************************************************************ */
/* The viewport is 519px or smaller */
@media screen and (max-width: 519px) {
    
    body {
      margin: 0 auto;
    }
  
    .main {
      width: 100vw;
      height: 100vh;
      position: relative;
      background-color: #717171;
    }
  
    #header {
      width: 100%;
    }

    .gray_info {
        position: relative;
        background-color:#717171;
        color: white;
        height: 58px;
    }

    .wh_txt {
        padding-top: 6px;
        margin-left: 25px; 
        font-size: 110%;
     }

    .left-btn {
        position: absolute;
        top: 13px;
        right: 82px;
    }
    
    .right-btn {
        position: absolute;
        top: 13px;
        right: 18px;
    }

    
}
  
/* ************************************************************************ */
  
/* ************************************************************************ */
/* The viewport is 520px or bigger */
@media screen and (min-width: 520px) {
    
    body {
      width: 520px;
      margin: 0 auto;
    }
  
    .main {
      width: 100%;
      position: relative;
      background-color: #717171;
    }

    .gray_info {
        position: relative;
        background-color:#717171;
        color: white;
        height: 58px;
    }

    .wh_txt {
       padding-top: 6px;
       margin-left: 25px; 
       font-size: 110%;
    }
    
    .left-btn {
        position: absolute;
        top: 13px;
        right: 82px;
    }
    
    .right-btn {
        position: absolute;
        top: 13px;
        right: 18px;
    }

    
}
  
/* ************************************************************************ */
  
/*  ********** GLOBAL STYLES ********** */

header {
    position: relative;
}

#top-nav {
    display: flex; 
    justify-content: flex-end;
    background-color: black;
    padding: 5px 25px 7px 25px;
    font-style: italic;
}
  
#top-nav a {
    color: white;
}
  
.wat-sch-head {
    color: white;
    font-size: 140%;
    position: absolute;
    top: 46px;
    left: 25px;
}
  
.nav-img {
    width: 100%;
}

#TOC-section {
    box-sizing: border-box;
    font-size: 110%;
    background-color: #717171;
    width: 100%;
    padding: 8px 0px 25px 25px;
    color: white;
    line-height: 2rem;
}
   
#TOC-section a {
    color: white;  
}

#vid-1 {
    height: 343px;
    z-index: -1;
    background-color: black;
}

#info {
    background-color: white;
}

.info-logo {
    margin: 0 auto;
    width: 180px;
    padding-top: 20px;
}

.info_content {
    margin-top: -40px;
    padding: 40px 25px 6px 25px;
    font-size: 105%;
}

a.info_nav:link {color:#fff; text-decoration: underline;}      
a.info_nav:visited {color:#fff;} 
a.info_nav:hover {color:#000;} 
a.info_nav:active {color:red;}

.white_info {
	display: inline;
	font-size: 95%;
	font-weight: 600;
	letter-spacing: .06em;
	color: #fff;
}

.info_p {
    margin-top: 13px;
}

.info_see {
    color: #5FA845;
    font-weight: bold;
}