/* Nunito */
@import url('https://fonts.googleapis.com/css?family=Nunito&display=swap');

body {
	margin: 0;
}

code {
	font-family: menlo, inconsolata, monospace;
	font-size: calc(1em - 2px);
	color: #555;
	background-color: #f0f0f0;
	padding: 0.2em 0.4em;
	border-radius: 2px;
}

/* font */
/* ref: https://github.com/RinoTsuka/jp-font-family/blob/master/style.css */
@font-face {
	font-family: "Original Yu Gothic";
	src: local("Yu Gothic Medium");
	font-weight: 100;
}
@font-face {
	font-family: "Original Yu Gothic";
	src: local("Yu Gothic Medium");
	font-weight: 200;
}
@font-face {
	font-family: "Original Yu Gothic";
	src: local("Yu Gothic Medium");
	font-weight: 300;
}
@font-face {
	font-family: "Original Yu Gothic";
	src: local("Yu Gothic Medium");
	font-weight: 400;
}
@font-face {
	font-family: "Original Yu Gothic";
	src: local("Yu Gothic Bold");
	font-weight: bold;
}
body {
	font-size: 14px;
	font-family: "Nunito", "Hiragino Sans", "Noto Sans CJK JP", "Original Yu Gothic", "Yu Gothic", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Sans Emoji";
	line-height: 1.5;
	color: #333;
}
@media (min-width: 400px) {
	body {
		font-size: 16px;
	}
}

/* text */
p, li {
	font-size: 1.125em;
	line-height: 1.7;
}
strong {
	font-weight: bold;
}
a {
	color: inherit;
}
a[target="_blank"]:after {
	font-family: "FontAwesome";
	content: "\f35d";
	font-size: 0.7em;
	padding: 0 0 0 0.3em;
	-webkit-font-smoothing: antialiased;
	display: inline-block;
	font-style: normal;
	font-variant: normal;
	text-rendering: auto;
	line-height: 1;
}

/* heading tags */
h1, h2, h3, h4, h5, h6 {
	margin: 0 0 0.5em 0;
	font-weight: 400;
	line-height: 1.2;
}
h1 {
	font-size: 2.25em;
	font-weight: bold;
	margin: 0 0 1.0em 0;
}
h2 {
	position: relative;
	font-size: 1.875em;
	font-weight: bold;
	margin: 1em 0 0.5em 0;
	padding: 0.2em 0 0.1em 0.4em;
	border-left: solid 0.8em #333;
	border-bottom: solid 0.1em #333;
}
h2::before {
	position: absolute;
	content: '';
	top: 0em;
	left: -0.5em;
	width: 0.5em;
	height: 100%;
	background-color: #25f2f1;
}
h3 {
	position: relative;
	font-size: 1.5em;
	font-weight: bold;
	margin: 1em 0 1em 0;
	padding: 0.2em 0 0.2em 0.6em;
	border-bottom: solid 0.1em #333;
}
h3::before {
	position: absolute;
	content: '';
	top: 0em;
	left: 0em;
	width: 0.4em;
	height: 100%;
	background-color: #25f2f1;
}