audio { width: 500px; }

.box3 {
    padding: 0.3em 0.3em;
    margin: 0.3em 2em;
    color: #2c2c2f;
    background: #fffce6;/*ÇØ·Ê¿§*/
}
.box3 p {
    margin: 0; 
    padding: 0;
}

h2 {
  position: relative;
  padding: 1em 0;
  color: #fff8dc;
  background: #800000;


}
h2::before,
h2::after {
  position: absolute;
  left: 0;
  content: '';
  width: 100%;
  height: 6px;
  box-sizing: border-box;
}
h2::before {
  top: 0;
  border-top: 2px solid #fff8dc;
  border-bottom: 1px solid #fff8dc;
}
h2::after {
  bottom: 0;
  border-top: 1px solid #fff8dc;
  border-bottom: 2px solid #fff8dc;
}