* {
    font-family: "Trebuchet MS", sans-serif;

}
aside{
    background-color: #C5CAE9;
    width: 40%;
    height: 600px;
    overflow: auto;
    float: left;
}
section#gora, section#dol{
    width: 60%;
    height: 300px;
    float: left;
}
#gora{
      background-color: #9FA8DA;
      
}
#dol{
      background-color: #7986CB;
      
}
footer{
    background-color: #283593;
    color: white;
    padding: 20px;
    clear: both;
}
.opona {
  background-color: #9FA8DA;
  margin: 40px;
  border: 2px dotted #283593;
  border-radius: 30px;
}
img {
  float: left; 
  padding: 20px; 
}
h2 {
  text-align: center;
  margin: 0;
  padding: 15px;
}
h3 {
  background-color: #7986CB;
  color: white;
  font-size: 140%;
}