feat: implement scroll lock on NSFW warning modal

src/App.vue

@@ -58,6 +58,7 @@ export default {
     showWarning() {
       if (!this.isConfirmedHorny) {
         this.isWarn = true;
+        document.body.classList.toggle("scroll-lock");
 
         setTimeout(() => {
           this.nsfw = false;
@@ -73,18 +74,18 @@ export default {
 @import "~normalize.css";
 
 #app {
-  padding: 5em 0 0 0;
+  padding: 5em 0 7em 0;
   color: $copy-color;
   font-size: 1.125em;
   -webkit-font-smoothing: antialiased;
   -moz-osx-font-smoothing: grayscale;
   transition: all ease-in-out 0.25s;
 
-  @media (min-width: 50em) {
+  @include mq-desktop {
     font-size: 1.25em;
   }
 
-  @media (min-width: 125em) {
+  @include mq-bigscreen {
     font-size: 1.5em;
   }
 }
@@ -125,7 +126,10 @@ header {
 }
 
 .footer {
-  margin: 2em 0 0 0;
+  position: fixed;
+  bottom: 0;
+  left: 0;
+  right: 0;
   padding: 0.75em 0;
   background-color: $bg-color-light;
   text-align: center;
@@ -153,6 +157,7 @@ header {
   }
 
   &__linkitem {
+    font-weight: bold;
   }
 
   &__link {

src/scss/base.scss

@@ -14,6 +14,14 @@
   text-size-adjust: 100%;
 }
 
+body {
+  background-color: lighten($bg-color-dark, 25%);
+
+  &.scroll-lock {
+    overflow: hidden;
+  }
+}
+
 h1,
 h2,
 h3,
@@ -48,7 +56,6 @@ a {
 }
 
 .bubbles {
-  background-color: lighten($bg-color-dark, 25%);
   position: fixed;
   top: 0;
   right: 0;