有人能告诉我当你打开全屏菜单时如何禁用滚动吗？ 下面的代码是我目前拥有的。 我需要禁用滚动在桌面和移动，而菜单是打开的，因为现在你可以滚动，当它打开，并将不知不觉结束在页面的不同部分，当你关闭菜单。

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:root {
  --color-secondary: #75757C;
  --color-dark: #364C62;
  --color-light: #F5F5F5;
  --td: 150ms;
  --te: cubic-bezier(0.215, 0.61, 0.355, 1);
}


.page-container > * + * {
  margin-top: 1.5rem;
}
 
.navigation-container {
  position: relative;
}

.nav-main {
  align-items: center;
  display: flex;
  height: 100%;
  justify-content: center;
  left: -100%;
  position: fixed;
  transition: left 0s calc(var(--td) * 2), transform 0s calc(var(--td) * 2);
  width: 100%;
  z-index: 99;
}

.nav-main::before, .nav-main::after {
  content: '';
  background-color: #0e0e0e;
  height: 100%;
  left: 0;
  position: absolute;
  transform: translateX(-110%);
  transform-origin: 0 50%;
  transition: transform calc(var(--td) * 2) var(--td) var(--te);
  width: 100%;
  z-index: -100;
}
.nav-main::before {
  top: -7%;
}
.nav-main::after {
  bottom: 0;
}
.nav-main .menu__item {
  opacity: 0;
  transform: translateX(-1rem);
  transition: opacity var(--td) var(--te), transform var(--td) var(--te);
}

[id="main-navigation-toggle"] {
  opacity: 0;
  position: fixed;
  top: -100%;
}
[id="main-navigation-toggle"] ~ label {
  cursor: pointer;
  position: absolute;
  right: 0rem;
  top: 0rem;
  z-index: 100;
}
[id="main-navigation-toggle"] ~ label span {
  display: block;
  height: 125px;
  padding: 0rem;
  position: relative;
  transition: transform calc(var(--td) * 3) var(--te);
  width: 2.7rem;
}
[id="main-navigation-toggle"] ~ label span::before, [id="main-navigation-toggle"] ~ label span::after {
  background-color: #FB4D98;
  bottom: 0;
  content: '';
  height: 5px;
  left: 0;
  margin: auto;
  position: absolute;
  right: 0;
  transition: transform calc(var(--td) * 3) var(--te);
  top: 0;
  width: calc(100% - 1rem);
}

@media screen and (max-width: 768px) {
    

[id="main-navigation-toggle"] {
  opacity: 0;
  position: fixed;
  top: -100%;
}
[id="main-navigation-toggle"] ~ label {
  cursor: pointer;
  position: absolute;
  z-index: 100;
}
[id="main-navigation-toggle"] ~ label span {
  display: block;
  height: 27px;
  right: -8px;
  padding: 0.5rem;
  position: relative;
  transition: transform calc(var(--td) * 3) var(--te);
  width: 2.7rem;
}
[id="main-navigation-toggle"] ~ label span::before, [id="main-navigation-toggle"] ~ label span::after {
  background-color: #FB4D98;
  bottom: 0;
  content: '';
  height: 5px;
  left: 0;
  margin: auto;
  position: absolute;
  right: 0;
  transition: transform calc(var(--td) * 3) var(--te);
  top: 0;
  width: calc(100% - 1rem);
}
}

[id="main-navigation-toggle"] ~ label span::before {
  transform: rotate(0) translateY(-100%);
}
[id="main-navigation-toggle"] ~ label span::after {
  transform: rotate(0) translateY(100%);
}
[id="main-navigation-toggle"]:checked ~ label span {
  transform: rotate(1turn);
}
[id="main-navigation-toggle"]:checked ~ label span::before {
  transform: rotate(45deg);
}
[id="main-navigation-toggle"]:checked ~ label span::after {
  transform: rotate(-45deg);
}
[id="main-navigation-toggle"]:checked ~ .nav-main {
  left: 0;
  transition: transform 0s;
}
[id="main-navigation-toggle"]:checked ~ .nav-main::before, [id="main-navigation-toggle"]:checked ~ .nav-main::after {
  transform: translateX(0);
  transition-delay: 0s;
}
[id="main-navigation-toggle"]:checked ~ .nav-main::after {
  transition-delay: calc(var(--td) / 0);
}
[id="main-navigation-toggle"]:checked ~ .nav-main .menu__item {
  opacity: 1;
  transform: translateX(0);
  transition: opacity calc(var(--td) * 2) var(--te), transform calc(var(--td) * 2) var(--te);
}
[id="main-navigation-toggle"]:checked ~ .nav-main .menu__item:nth-child(1) {
  transition-delay: calc(var(--td) * 2 * (1 * 0.25));
  z-index: -1;
}
[id="main-navigation-toggle"]:checked ~ .nav-main .menu__item:nth-child(2) {
  transition-delay: calc(var(--td) * 2 * (2 * 0.25));
  z-index: -2;
}
[id="main-navigation-toggle"]:checked ~ .nav-main .menu__item:nth-child(3) {
  transition-delay: calc(var(--td) * 2 * (3 * 0.25));
  z-index: -3;
}
[id="main-navigation-toggle"]:checked ~ .nav-main .menu__item:nth-child(4) {
  transition-delay: calc(var(--td) * 2 * (4 * 0.25));
  z-index: -4;
}
[id="main-navigation-toggle"]:checked ~ .nav-main .menu__item:nth-child(5) {
  transition-delay: calc(var(--td) * 2 * (5 * 0.25));
  z-index: -5;
}
.menu {
  position: relative;
  text-align: center;
  z-index: 1;
}
.menu > .menu__item {
  font-family: alliance !important;
  font-size: 10vmin;
  text-transform: uppercase;
}
@media only screen and (max-width: 600px) {
    .menu {
  position: relative;
  text-align: center;
  margin-top:-7%;
  z-index: 1;
}
}
.submenu {
  left: 0;
  opacity: 0;
  position: absolute;
  transform: translateY(-10%);
  top: 100%;
  width: 100%;
  visibility: hidden;
  z-index: 2;
}
.submenu .menu__item {
  font-family: var(--font-family-primary);
  font-size: 3.5vmin;
  width: 100%;
}
.submenu .menu__link {
  color: var(--color-secondary);
  text-shadow: 1px 1px 0 var(--color-primary), 2px 2px 0 var(--color-primary);
}
.submenu .menu__link::before, .submenu .menu__link::after {
  display: none;
}
.menu__item {
  display: block;
  position: relative;
}
.menu__item:hover .menu__link::before, .menu__item:hover .menu__link::after {
  animation: blink 1s var(--td) steps(1, end) forwards infinite;
  transform: translateX(calc(100% - 0.5rem));
  transition-duration: calc(var(--td) * 3);
}
.menu__item:hover .menu__link::after {
  transition-delay: calc(var(--td) / 2);
}
.menu__item:hover .submenu {
  opacity: 1;
  transform: translateY(0);
  transition: transform calc(var(--td) * 2) calc(var(--td) * 3) var(--te), opacity calc(var(--td) * 2) calc(var(--td) * 3) var(--te), visibility 0s calc(var(--td) * 3);
  visibility: visible;
}
.menu__link {
  color: #F4FB82;
  display: inline-block;
  font-weight: normal;
  overflow: hidden;
  padding: 0.5rem 1rem 0.125rem;
  position: relative;
  text-decoration: none;
  transition: color var(--td) var(--te), opacity var(--td) var(--te), transform var(--td) var(--te);
  z-index: 1;
}
.menu__link::before, .menu__link::after {
  content: '';
  background-color: #fb4d98;
  height: 50%;
  left: 0;
  position: absolute;
  transform: translateX(-110%);
  transform-origin: 0 50%;
  transition: transform 0s var(--te);
  width: 100%;
  z-index: -1;
}
.menu__link::before {
  top: 0;
}
.menu__link::after {
  bottom: 0;
}
.menu:not(:focus-within):not(:hover) .menu__item .menu__link {
  opacity: 1;
  transform: translate(0, 0);
}
.menu__item {
  --pull: 30%;
}
.menu__item .menu__link {
  opacity: 0.25;
  transition-duration: calc(var(--td) * 3);
  transform: translate(0, calc(var(--pull) * -1));
}
.menu__item .submenu .menu__link {
  opacity: 1;
}
.menu__item:hover > .menu__link {
  color: #fb4d98;
  opacity: 1;
  transform: translate(0, 0);
}
.menu__item:hover > .menu__link:hover {
  color: var(--color-light);
  transition-delay: 0s;
}
.menu__item:hover ~ .menu__item > .menu__link {
  transition-duration: calc(var(--td) * 3);
  transform: translate(0, var(--pull));
}
@keyframes blink {
  50%, 100% {
    opacity: 0;
  }
}

<div class="navigation-container">
<input type="checkbox" id="main-navigation-toggle" class="btn btn--close" title="Toggle main navigation" />
<label for="main-navigation-toggle">
  <span></span>
</label>

<nav id="main-navigation" class="nav-main">
  <ul class="menu">
    <li class="menu__item">
      <a class="menu__link" href="#0">Home</a>
    </li>
    <li class="menu__item">
      <a class="menu__link" href="#0">About</a>
    </li>
    <li class="menu__item">
      <a class="menu__link" href="#0">Projects</a>
   
</li>
    <li class="menu__item">
      <a class="menu__link" href="#0">Contact</a>
    </li>
  </ul>
</nav>
</div>

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