Untitled

<code>
<style>
#menu__toggle {
  opacity: 0;
}
#menu__toggle:checked + .menu__btn > span {
  transform: rotate(45deg);
}
#menu__toggle:checked + .menu__btn > span::before {
  top: 0;
  transform: rotate(0deg);
}
#menu__toggle:checked + .menu__btn > span::after {
  top: 0;
  transform: rotate(90deg);
}
#menu__toggle:checked ~ .menu__box {
  left: 0 !important;
}
.menu__btn {
  position: fixed;
  width: 26px;
  height: 26px;
  cursor: pointer;
  z-index: 1;
}
.menu__btn > span, .menu__btn > span::before, .menu__btn > span::after {
  display: block;
  position: absolute;
  width: 100%;
  height: 3px;
  background-color: #3F88C5;
  transition-duration: 0.25s;
}
.menu__btn > span::before {
  content: '';
  top: -8px;
}
.menu__btn > span::after {
  content: '';
  top: 8px;
}
.menu__box {
  display: block;
  position: fixed;
  top: 0;
  left: -100%;
  width: 300px;
  height: 100%;
  margin: 0;
  padding: 80px 0;
  list-style: none;
  background-color: #C5E3FD;
  box-shadow: 3px 2px 6px rgba(0, 0, 0, 0.4);
  transition-duration: 0.25s;
}
.menu__item {
  display: block;
  padding: 12px 24px;
  color: #324376;
  font-family: 'Montserrat', sans-serif;
  font-size: 20px;
  font-weight: 600;
  text-decoration: none;
  transition-duration: 0.25s;
}
.menu__item:hover {
  background-color: #CFD8DC;
}

</style>
<div class="hamburger-menu">
    <input id="menu__toggle" type="checkbox" />
    <label class="menu__btn" for="menu__toggle">
      <span></span>
    </label>

    <ul class="menu__box">
      <li><a class="menu__item" href="https://coworkingspace-gleisdorf.at/">Home</a></li>
			<li><a class="menu__item" href="https://coworkingspace-gleisdorf.at/galerie/">Galerie</a></li>
			<li><a class="menu__item" href="https://coworkingspace-gleisdorf.at/kontakt/">Kontakt</a></li>

  </div>
</code>