/*  this stuff for responsive 12-column formatting   */

* {
  box-sizing: border-box;
}

.col-1 {width: 8.33%;}
.col-2 {width: 16.66%;}
.col-3 {width: 25%;}
.col-4 {width: 33.33%;}
.col-5 {width: 41.66%;}
.col-6 {width: 50%;}
.col-7 {width: 58.33%;}
.col-8 {width: 66.66%;}
.col-9 {width: 75%;}
.col-10 {width: 83.33%;}
.col-11 {width: 91.66%;}
.col-12 {width: 100%;}
.col-1-8 {width: 12.5%;}
.col-2-8 {width: 25%;}
.col-5-8 {width: 62.5%;}
.col-6-8 {width: 75%;}
.col-7-8 {width: 87.5%;}

[class*="col-"] {
  float: left;
  padding: 5px;
}

.row::after {
  content: "";
  clear: both;
  display: table;
}

/*  overall font  */

html {
  font-size:90%;
  background-color: #ddeeff;
}
h1 {font-size:2vw;}
h2 {font-size:1vw;}

/*  images */

img.resp {
    min-width:50px;
    max-width:100%;
    height:auto;
    margin: 0 0 0 0
}
img.respleft {
    float:left;
    min-width:50px;
    max-width:100%;
    height:auto;
    margin: 0 10px 10px 0
}
img.respright {
    float:right;
    min-width:50px;
    max-width:100%;
    height:auto;
    margin: 0 0 10px 10px
}

/* button  */

.button {
  background-color: #888888;
  border: 2px solid black;
  border-radius: 8px;
  color: white;
  padding: 5px 10px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  white-space: normal;
  word-wrap: break-word;
  font-size: 1.2vw;
  font-weight: bold;
}
.button:hover {
  background-color: #ccddff;
  color: black;
}

/*   specific colours for defined row classes    */

.header {
  background-color: #4080a0;
  color: #ffffff;
  text-align: center;
  font-size: 12px;
  margin: 0;
}

.menu {
  background-color: #fff5a6;
}
.intro {
  background-color: #ddeeff;
}
.main {
  background-color: #ddeeff;
}