/* This is the only stylesheet used by the individual challenge course files. There is a copy in each year's files. A few styles are copied from the main globalstyle stylesheet. the files challenge-wrapup, courses, challenge-results use a globalstyle file one level up. */

body {
 margin:0;
 font-family:Calibri, Verdana, sans-serif;
 background-image: url('pictures/background.jpg');
}
.logo-background {background-image: url('pictures/othtcbg.gif');}
.whitespace  {
   margin:auto;
   background:white;
   box-sizing: border-box; 
   max-width:900px;
   padding:10px 30px 30px;
}

.border {
  border:1px solid #ddd;
}

h1, h2, h3 {font-family: Calibri, Geneva, sans-serif;}

p, li {font-family: "Century Gothic", Geneva, sans-serif;}  

p a, li a {color:#629d75;}

img {
  display: block;
  margin: 10px auto;
}

[class*="row-"]  {
  box-sizing:border-box;
  margin:0 auto;
}   
.row-1 {
  width:100%; 
  max-width: 670px;}

.col-1 {width: 100%;}
.col-2 {width: 50%;}
.col-3 {width: 33.3%;}

[class*="col-"] {
  box-sizing:border-box;
  float: left;
}

[class*="row-"]::after {
  content: "";
  display: table;
  clear: both;
}
[class*="col-"] a { 
  box-sizing: border-box;
  display: block;
  text-align: center;
  text-decoration: none;
  background-color: #53ac6f;
  width: 148px;
  height: 70px;
  font: 18px bold Verdana, sans-serif;
  color: white;
  margin: 10px auto;
  padding:12px 14px;
}

@media screen and (max-width:550px) {
[class*="col-"] {
    width: 100%;
  }
}
#topBtn {
  display: none;
  position: fixed;
  bottom: 20px;
  right: 30px;
  z-index: 99;
  font-size: 18px;
  border: none;
  outline: none;
  background-color: hsl(139, 23%, 50%, 0.7);
  color: white;
  cursor: pointer;
  padding: 15px;
  border-radius: 4px;
}

#topBtn:hover {
  background-color: hsl(0, 0%, 30%, 0.7);
}