/* サブタイトル */
h3.miniTtl {
  font-weight: normal;
  font-size: 116%;
  margin: 25px 0 15px;
}
h3.miniTtl::before {
    content: "\f142";
    display: inline-block;
    font: normal normal normal 14px/1 FontAwesome;
    font-size: 100%;
    text-rendering: auto;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    width: 14px;
}
div.box-graybg {
  background: #eee;
  padding: 20px;
  border-radius: 5px;
  margin: 20px 0;
  overflow: hidden;
}
div.box-line {
  padding: 20px;
  border-radius: 5px;
  margin: 20px 0;
  border:1px solid #ccc;
  overflow: hidden;
}

div.box-line h3.miniTtl,
div.box-graybg h3.miniTtl {
    margin: 0 0 15px;
    border-bottom: 1px solid #eee;
    padding-bottom: 10px;
}
div.box-graybg h3.miniTtl {
  border-bottom: 1px solid #aaa;
}



@media (max-width: 768px) {
  div.box-line {
    padding: 15px;
  }
  
}