<h1 class="msr_h101">Heading01</h1>
<h2 class="msr_h201">Heading02</h2>
<h3 class="msr_h301">Heading03</h3>
<h4 class="msr_h401">Heading04</h4>

.msr_h101 {
  background: linear-gradient(#FEFEFE, #F3F5F5);
  background: -o-linear-gradient(#FEFEFE, #F3F5F5);
  background: -ms-linear-gradient(#FEFEFE, #F3F5F5);
  background: -moz-linear-gradient(#FEFEFE, #F3F5F5);
  background: -webkit-linear-gradient(#FEFEFE, #F3F5F5);
  background: -webkit-gradient(linear, left top, left bottom, color-stop(1.00, #F3F5F5), color-stop(0.00, #FEFEFE));
  border: 1px solid #AAAAAA;
  border-radius: 3px;
  box-sizing: border-box;
  font-size: 22px;
  margin: 0 0 20px;
  padding: 8px 10px 8px 26px;
  position: relative;
  width: 100%;
}

/* h1青の縦ライン */
.msr_h101:before {
  background-color: #1B73BA;
  border-radius: 3px;
  content: " ";
  display: inline-block;
  height: 60%;
  left: 10px;
  margin-right: 10px;
  position: absolute;
  top: 20%;
  width: 6px;
}
.msr_h201 {
  background: linear-gradient(#F3F5F5, #fff);
  background: -o-linear-gradient(#F3F5F5, #fff);
  background: -ms-linear-gradient(#F3F5F5, #fff);
  background: -moz-linear-gradient(#F3F5F5, #fff);
  background: -webkit-linear-gradient(#F3F5F5, #fff);
  background: -webkit-gradient(linear, left top, left bottom, color-stop(1.00, #fff), color-stop(0.00, #F3F5F5));
  border-bottom: 2px solid #1B73BA;
  box-sizing: border-box;
  font-size: 18px;
  margin: 0 0 20px;
  padding: 7px 0 5px 10px;
}
.msr_h301 {
  border-bottom: 2px solid #1B73BA;
  font-size: 18px;
  margin: 0 0 20px;
  padding-bottom: 5px;
}
.msr_h401 {
  font-size: 16px;
  margin: 0 0 20px;
}

/* h4青の縦ライン */
.msr_h401:before {
  background-color: #1B73BA;
  border-radius: 2px;
  content: "";
  display: inline-block;
  height: 15px;
  margin-right:  8px;
  vertical-align: middle;
  width: 4px;
}