<h1 class="cp_h1title">見出しテキスト</h1>
.cp_h1title {
position: relative;
padding: .1em .3em .1em 1em;
border-bottom: 1px solid #FFB300;
}
.cp_h1title:before,.cp_h1title:after {
position: absolute;
content: "";
display: block;
width: 12px;
height: 12px;
border: 2px solid #da3c3c;
top: 40%;
left: 3px;
transform: rotate(45deg);
}
.cp_h1title:after {
top: 40%;
left: 10px;
height: 12px;
width: 12px;
transform: rotate(45deg);
border: none;
background: rgba(255,179,0,.3);
}