body {
  color: #666;
}
header, main, #footlinks {
  width: 1000px;
  margin-left: auto;
  margin-right: auto;
}

header {
  display: grid;
  grid-template-columns: 174px 1fr;
  grid-template-rows: auto auto;
}
#logo img {
  vertical-align: baseline;
}
nav ul {
  display: block;
  margin: 0;
  padding: 0;
  text-align: right;
  line-height: 40px;
}
nav li, nav a {
  display: inline;
}
nav li {
  margin: 0 0.4rem;
}
nav a {
  background: transparent;
  vertical-align: -28px;
}
nav+picture {
  grid-column: 1/2;
}
nav+picture img {
  width: 1000px;
}
/* ↓ サイトトップページへ戻るためのボタン設定 ↓ */
/*参考サイト:https://cotodama.co/pagetop/*/
#site_top {
	width: 105px;
	height: 80px;
	position: fixed;
	right: 0;
	bottom: 0;
	background: #333;
	opacity: 0.6;
	border-radius: 15px;
}

#site_top a {
	position: relative;
	display: block;
	width: 100px;
	height: 60px;
	text-decoration: none;
}

#site_top a::before {
	font-family: 'Font Awesome 5 Free';
	font-weight: 900;
	content: '\f102';
	font-size: 25px;
	color: #fff;
	position: absolute;
	width: 25px;
	height: 25px;
	top: -25px;
	bottom: 0;
	right: 0;
	left: 0;
	margin: auto;
	text-align: center;
}

#site_top a::after {
	content: 'K.Kishimoto のトップへ戻る';
	font-size: 13px;
	color: #fff;
	position: absolute;
	top: 30px;
	bottom: 0;
	right: 0;
	left: 0;
	margin: auto;
	text-align: center;
}

/* ↑ サイトトップページへ戻るためのボタン設定 ↑ */


main {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto;
  margin-top: 2.4rem;
}
main > article {
  margin-right: 1.5rem
}
#sub > article {
  padding: 1rem;
  border: 2px solid #eee;
  border-radius: 4px;
}
#sub > article:first-child {
  margin-bottom: 1rem;
}
#sub > article p {
  margin: 1rem 0 0;
}
h1 {
  font-size: 1.4rem;
  margin: 0;
}

h2 {
  margin: 0;
  padding-left: 1.4rem;
  background: url(pf-cs-images/icon.png) no-repeat left / contain;
}

#footlinks {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  grid-template-rows: auto;
}
#footlinks section:nth-child(n+2) {
  margin-left: 1.2rem;
}
#footlinks h3 {
  font-size: 0.9rem;
}
#footlinks a {
  font-size: 0.9rem;
}