HTML/CSSã§ã®ãƒãƒ³ãƒãƒ¼ã‚¬ãƒ¼ãƒœã‚¿ãƒ³å®Ÿè£…

/* =================
ãƒãƒ³ãƒãƒ¼ã‚¬ãƒ¼ãƒœã‚¿ãƒ³ã®å®Ÿè£…
================= */

.menu-btn {
  position: fixed;
  top: 10px;
  right: 10px;
  display: flex;
  height: 60px;
  width: 60px;
  justify-content: center;
  align-items: center;
  z-index: 90;
  background-color: black;
}
.menu-btn:hover {
  cursor: pointer;
}
/* ä¸‰æœ¬ç·šã®å®Ÿè£… */
.menu-btn span,
.menu-btn span:before,
.menu-btn span:after {
  content: "";
  display: block;
  height: 3px;
  width: 25px;
  border-radius: 3px;
  background-color: #ffffff;
  position: absolute;
}
.menu-btn span:before {
  bottom: 8px;
}
.menu-btn span:after {
  top: 8px;
}
/* ãƒã‚§ãƒƒã‚¯ãƒœãƒƒã‚¯ã‚¹ã‚’éžè¡¨ç¤ºã«ã™ã‚‹ */
#menu-btn-check {
  display: none;
}

#menu-btn-check:checked ~ .menu-btn span {
  background-color: rgba(
    255,
    255,
    255,
    0
  ); /*ãƒ¡ãƒ‹ãƒ¥ãƒ¼ã‚ªãƒ¼ãƒ—ãƒ³æ™‚ã¯çœŸã‚“ä¸ã®ç·šã‚’é€æ˜Žã«ã™ã‚‹*/
}

/* ãƒ¡ãƒ‹ãƒ¥ãƒ¼ã‚’é–‹ã„ã¦ã„ã‚‹æ™‚ã¯ãƒãƒ³ãƒãƒ¼ã‚¬ãƒ¼ãƒœã‚¿ãƒ³ãŒÃ—ã«ãªã‚‹ */
#menu-btn-check:checked ~ .menu-btn span::before {
  bottom: 0;
  transform: rotate(45deg);
}
#menu-btn-check:checked ~ .menu-btn span::after {
  top: 0;
  transform: rotate(-45deg);
}
/* =================
ãƒ¡ãƒ‹ãƒ¥ãƒ¼éƒ¨åˆ†ã®å®Ÿè£…
================= */

.menu-content {
  width: 80%;
  height: 100%;
  position: fixed;
  top: 0;
   /* ãƒ¡ãƒ‹ãƒ¥ãƒ¼ã‚’å¤–ã«å‡ºã—ã¦ãŠã */
  left: 100%;ã€€

z-index: 80;
  background-color: black;
  transition: all 0.5s; /*ã‚¢ãƒ‹ãƒ¡ãƒ¼ã‚·ãƒ§ãƒ³ã‚’æ»‘ã‚‰ã‹ã«ã™ã‚‹*/
}
.menu-content ul {
  padding: 70px 10px 0;
}
.menu-content ul li {
  border-bottom: solid 1px #ffffff;
  list-style: none;
}
.menu-content ul li a {
  display: block;
  width: 100%;
  font-size: 15px;
  box-sizing: border-box;
  color: #ffffff;
  text-decoration: none;
  padding: 9px 15px 10px 0;
  position: relative;
}

#menu-btn-check:checked ~ .menu-content {
  left: 30%; /*ãƒ¡ãƒ‹ãƒ¥ãƒ¼ã‚’ç”»é¢å†…ã¸å‹•ã‹ã™*/
}