@import url("bootstrap.min.css");

h1 {
  position: relative;
  line-height: 1.4;
  padding:0.25em 1em;
  display: inline-block;
  top:0;
  font-family: serif;
  font-weight: 600;
}

h1:before, h1:after { 
  position: absolute;
  top: 0;
  content:'';
  width: 8px;
  height: 100%;
  display: inline-block;
}
h1:before {
  border-left: solid 1px black;
  border-top: solid 1px black;
  border-bottom: solid 1px black;
  left: 0;
}
h1:after {
  content: '';
  border-top: solid 1px black;
  border-right: solid 1px black;
  border-bottom: solid 1px black;
  right: 0;
}

h2 {
  padding: 0.5em;/*文字周りの余白*/
  color: #010101;/*文字色*/
  background: #eaf3ff;/*背景色*/
  border-bottom: solid 3px #516ab6;/*下線*/
  font-family: sans-serif;
  font-weight: 300;
}

h3 {
  padding: 0.25em 0.5em;/*上下 左右の余白*/
  color: #494949;/*文字色*/
  background: transparent;/*背景透明に*/
  border-left: solid 5px #7db4e6;/*左線*/
}