*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* sidebar */
.elemento-sidebar-container{
  border:  1px solid #000;
}
.elemento-sidebar{
  padding: 10px 15px;
}
.elemento-sidebar aside{
  margin-block: 10px;
  border-block-end: 1px solid #4d4d4d;
  padding-block-end: 10px;
}
.elemento-sidebar aside h2{
  padding-block-end: 10px;
}
.elemento-sidebar h2 ~ *{
  opacity: 0.6;
}
.elemento-sidebar *{
  color: #000;
}
.elemento-sidebar form div{
  position: relative;
}
.elemento-sidebar form input[type="search"]{
  width: 100%;
}
.elemento-sidebar form button{
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  padding-inline: 10px;
  background-color: #0e5af2;
  color: #fff;
}