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;
	z-index: 1;
	margin: 0 0 1em;
	color: #fff;
}
.div-parent::after {
	content: "";
	position: absolute;
	z-index: -1;
	top: 0;
	left: 0;
	display: block;
	width: 100%;
	height: 100%;
	background-color: #1563ad;
}
.style01 {
	padding: 40px 40px 40px 70px;
}
.style01::after {
	clip-path: polygon(60px 0, 100% 0, 100% 100%, 0 100%);
}
.style02 {
	padding: 40px 70px 40px 40px;
}
.style02::after {
	clip-path: polygon(0 0, calc(100% - 60px) 0, 100% 100%, 0 100%);
}
.style03 {
	padding: 40px 40px 40px 70px;
}
.style03::after {
	clip-path: polygon(60px 0, 100% 0, 100% 100%, 60px 100%, 0 50%);
}
.style04 {
	padding: 40px 70px 40px 40px;
}
.style04::after {
	clip-path: polygon(0 0, calc(100% - 60px) 0, 100% 50%, calc(100% - 60px) 100%, 0 100%);
}

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