html {
	font-size: 62.5%;
}
body {
	margin: 0;
	font-size: 1.5rem;
}
p {
	margin: 0 0 1em;
}
*, *::before, *::after {
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}
.contents {
	max-width: 630px;
	margin: 0 auto;
	padding: 20px;
	background: #f2f2f2;
}
.title {
	margin: 0 0 1em;
	font-weight: bold;
}

.div-parent {
	position: relative;
	width: 100%;
	height: 148px;
	margin: 0 0 1em;
	background-color: #fff;
}
.div-parent::before {
	content: "";
	position: absolute;
	top: 0;
	left: 0;
	display: inline-block;
	width: 100%;
	height: 100%;
	background-size: 56px 56px;
}
.style01::before {
	background-image: radial-gradient(#fff 8px, #87d9d1 8px);
	background-repeat: no-repeat;
}
.style02::before {
	background-image: radial-gradient(#fff 8px, #87d9d1 8px);
}
.style03::before {
	background-image: radial-gradient(#fff 8px, #87d9d1 8px);
	background-position: center;
}
.style04::before {
	background-image: radial-gradient(at left top, #fff 8px, #87d9d1 8px);
	background-repeat: no-repeat;
}
.style05::before {
	background-image: radial-gradient(at left top, #fff 8px, #87d9d1 8px);
}
.style06::before {
	background-image: radial-gradient(at 8px 8px, #fff 8px, #87d9d1 8px);
	background-repeat: no-repeat;
}
.style07::before {
	background-image: radial-gradient(at 8px 8px, #fff 8px, #87d9d1 8px);
}
.style08::before {
	background-image: radial-gradient(#fff 8px, #87d9d1 8px);
	background-repeat: no-repeat;
	background-size: 56px 28px;
}
.style09::before {
	background-image: radial-gradient(circle, #fff 8px, #87d9d1 8px);
	background-repeat: no-repeat;
	background-size: 56px 28px;
}
.style10::before {
	background-image: radial-gradient(circle, #fff 8px, #87d9d1 8px);
	background-size: 56px 28px;
}

.copyright {
	text-align: center;
	padding-top: 2em;
	font-size: 14px;
}