.ttl03.kagu {
  font-size: 15px;
  border-top: 3px double #6d6d6d;
  border-bottom: 3px double #6d6d6d;
  font-weight:bolder;
}
.wbox {
    padding: 0.5em 1em;
    margin: 2em 0;
    border: double 5px #4ec4d3;
}
.wbox p {
    margin: 0; 
    padding: 0;
}