body {
    height: 100%;
    margin: 0;
  
    background: url("images/john_hancock_center.jpg") no-repeat center center fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}

body:after {
    content: "";
    position: fixed; /* stretch a fixed position to the whole screen */
    top: 0;
    height: 100vh; /* fix for mobile browser address bar appearing disappearing */
    left:0;
    right:0;
    z-index:-1; /* needed to keep in the background */
    background: url("images/john_hancock_center.jpg") center center;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}

#background-clicks {
    position: fixed;
    height: 100vh;
    width: 100vw;
}

#header {
  position: relative;
}

#menu-btn {
  position: relative;
}

.page-content {
    background-color:white;
    border: 4px solid darkgray;
  }
  
.box {
    border: 4px solid darkgray;
    padding: 6px;
}

.box ul {
    column-count: 4;
    /* column-fill: balance;
    column-width: 350px; */
    width: 100%;
}

td a { 
    color: black;
    display: block;
    text-decoration: none;
}

tr a { 
    color: black;
    display: block;
    text-decoration: none;
}


@media only screen and (max-width: 500px) {
  .box ul {
    column-count: 1;
  }
}
@media only screen and (min-width: 501px) and (max-width: 700px) {
  .box ul {
    column-count: 2;
  }
}
@media only screen and (min-width: 701px) and (max-width: 800px) {
  .box ul {
    column-count: 3;
  }
}

/* Mobile Styles */
@media only screen and (max-width: 460px) { /* 414pt = Width of iPhone 6+, 7+, 8+, XR, Xs Max */
  #menu-btn {
    top: -18px;
  }
  .page-content {
    margin-top: 10px;
    margin-bottom: 20px;
    
    margin-left: 20px;
    margin-right: 20px;

    padding-top: 5px;
    padding-bottom: 5px;

    padding-left: 20px;
    padding-right: 20px;
  }
}

/* Tablet Styles */
@media only screen and (min-width: 461px) and (max-width: 800px) {
  #menu-btn {
    top: -22px;
  }
  .page-content {
    margin-top: 30px;
    margin-bottom: 40px;

    margin-left: 40px;
    margin-right: 40px;

    padding-top: 5px;
    padding-bottom: 5px;

    padding-left: 40px;
    padding-right: 40px;
  }
}

/* Desktop Styles */
@media only screen and (min-width: 801px) {
  #menu-btn {
    top: -27px;
  }
  .page-content {
    margin-top: 50px;
    margin-bottom: 60px;

    margin-left: 60px;
    margin-right: 60px;

    padding-top: 5px;
    padding-bottom: 5px;

    padding-left: 60px;
    padding-right: 60px;
  }
}