html {
 background-color: white;
 color:black;
}

  
header {
  height:10%;
}
section {
  width:90%;
  float: left;
}
img {
  float:left; 
  width: 100%;
}
div {
  width:30%;
  float:left;
} 
  div {
  padding: 0 5% 0 5%; 
  border-style: inset;
  border-color:	aquamarine;
  border-width: 5px; 
}