:root {
  --color-black: #000;
  --window-width-l: 1440px;
  --window-width-m: 1024px;
  --window-width-s: 380px;
  --font-sans: "Open Sans", YakuHanJP, "Noto Sans JP", sans-serif;
  --font-bold: "Open Sans", YakuHanJP, "Noto Sans JP", sans-serif;
}

body {
  background: #fff;
  font-family: var(--font-sans);
  line-height: 1.8;
}

.heading {
  font-weight: 900;
  font-family: var(--font-bold);
}

.op-3 {
  opacity: 0.3;
}

a {
  color: #da3832;
}

a:active {
  color: red;
}

a:hover {
  color: #da3832;
  text-decoration: underline;
}