/* Ensure proper sizing */
* {
  box-sizing: border-box;
}
 body {
      font-family: Verdana, Helvetica, 'Times New Roman';      
}
/* create responsive image */
  .responsive {
   width:100%;
   max-width: 100px;
   height: auto;
  }
  /* create responsive image for side content */
  .responsiveimg {    
    width:100%;
    max-width: 100%;
    height: auto;
   }
/*Screen reader text styling */
    #skip a {
    position:absolute;
    left:-10000px;
    top:auto;
    width:1px;
    height:1px;
    overflow:hidden;
    }
    #skip a:focus {
    position:static;
    width:auto;
    height:auto;      
    }   
/* Style the top navigation bar */
    nav {
      overflow: hidden;
      background-color: #ffffff;
    } 
/* Style the links inside the navigation bar */   
    nav a {
      float: left;
      display: block;
      color: #000000;
      text-align: center;
      padding: 14px 20px;
      text-decoration: none;
      font-size: 17px;
    }
/* Change the color of links on hover */
   nav a:hover, nav a:focus  {
      background-color: #dddddd;
      color: #000000;
      border: 2px solid #ddd;      
    }

 /* Style the "active" element to highlight the current page */
  nav a.active {
      background-color: #fff;
      color: #000000;
      border: 2px solid #dddddd; 
    }
/* Style the header */
    header {
      padding: 5px;
      text-align: center;
      background: #EEEEEE;
      color: #000000;
      border-bottom: 1px solid #000000;  
    }
/* Increase the font size of the h1 p elements to accomodate visually impaired audience */
    header h1 {
      font-size: 40px;
    }  
/* Column container */
    .row {  
      display: flex;
      flex-wrap: wrap; 
      padding: 5px;     
    }
/* Float four columns side by side */
.column1 {
  float: left;
  width: 25%;
  padding: 0 2px;
  }
/* Remove extra left and right margins, due to padding */
.row1 {
margin: 0 -5px;
margin: 5px;
}
/* Clear floats after the columns */
.row1:after {
  content: "";
  display: table;
  clear: both;
}
 /* Create two unequal columns that sits next to each other */
  /* Sidebar/left column */
    .side {
      flex: 20%;
      background-color: #f1f1f1;
      padding: 20px;
      border-left: 1px solid #000000;
    }
    /* Main column */
    .main {   
      flex: 80%;
      background-color: white;
      padding: 20px;
    }
    footer {
      padding: 20px; /* Some padding */
      text-align: center; /* Center text*/
      background: #ddd; /* Grey background */
      flex-shrink: 0;
      }

   /* Accordion styling */    
   ul {
    list-style:none;
  }       
  #accordion button:focus{
    border-radius:10px;
    outline:none;
  }
  #accordion button{
      outline: none;
      background-color:#575757;
      padding: 18px;   
      border:2px solid #000000;          
      color: white;
      width: 100%;
      text-align:left;
      font-size:16px;
      border-radius:10px;
      margin: 5px;
  }
  #accordion ul li{
     border: 1px solid DarkSlateGray;      
  }
  .acc-item-content{
    padding: 0px 10px;
  }
  .acc-item:last-child {
    border-bottom: 1px solid DarkSlateGray;
  }
  #accordion button::after{
    content: "\002B";
    font-weight: 900;
    font-size: 22px;
    float:right;
  }
  #accordion{
    width:90%;   
  }
  .acc-item-content{
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
  }      
  #accordion button.active:after{
      content: "\2212";
    font-weight: 900;
    font-size: 22px;
    float:right;
  }
    /* Style the counter cards */
.card {
  box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2);
  text-align: center;
  background-color: #f1f1f1;
  border: 1px solid #ddd; /* Gray border */
  border-radius: 4px;  /* Rounded border */  
}
.card:hover {
  border: 1px solid #000000;
}
/* Responsive layout - when the screen is less than 700px wide, make the two columns stack on top of each other instead of next to each other */
    @media screen and (max-width: 700px) {
      .row {   
        flex-direction: column;
      }
    }
/* Responsive layout - when the screen is less than 400px wide, make the navigation links stack on top of each other instead of next to each other */
    @media screen and (max-width: 400px) {
      nav a {
        float: none;
        width:100%;
      }
    }
/* Responsive columns for worksheets section */
@media screen and (max-width: 600px) {
  .column1 {
    width: 100%;
    display: block;
    margin-bottom: 20px;
  }
}
/* When the screen is less than 600px wide, stack the links and the search field vertically instead of horizontally */
@media screen and (max-width: 600px) {
  nav input[type=text] {
    border: 1px solid #ccc;  
  }
}