h2#danraku2 {
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*/
}

h3#danraku3 {
padding: 0.4em 0.5em;/*文字の上下 左右の余白*/
color: #494949;/*文字色*/
background: #f4f4f4;/*背景色*/
border-left: solid 5px #7db4e6;/*左線*/
border-bottom: solid 3px #d7d7d7;/*下線*/
}

h4#danraku4 {
border-bottom: solid 3px skyblue;
position: relative;
}

h4:after {
position: absolute;
content: " ";
display: block;
border-bottom: solid 3px #ffc778;
bottom: -3px;
width: 30%;
}