boilerplate

scss/global/_flex.scss

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+// Flexbox.
+.flex-group-center,
+.flex-group-left,
+.flex-group-right {
+  justify-content: center;
+  align-items: center;
+  text-align: center;
+}
+
+.flex-group-left {
+  justify-content: flex-start;
+  text-align: left;
+}
+
+.flex-group-right {
+  justify-content: flex-end;
+  text-align: right;
+}
+
+.flexshrink {
+  flex: 0;
+}
+
+.flex-between {
+  justify-content: space-between;
+}
+
+.flexlarge {
+  flex: 2;
+}
+
+// Alignment styles.
+.align-left {
+  justify-content: flex-start;
+  text-align: left;
+}
+
+.align-right {
+  justify-content: flex-end;
+  text-align: right;
+}
+
+.align-center {
+  justify-content: center;
+  text-align: center;
+}

scss/global/_grid.scss

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+// Grid.
+.grid,
+.grid-2col {
+  display: grid;
+  grid-column: span 2 / span 2;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 10px;
+  margin: 10px 0;
+  padding: 0;
+}
+
+.grid-3col {
+  grid-column: span 3 / span 3;
+  grid-template-columns: repeat(3, minmax(0, 1fr));
+}
+
+.grid-4col {
+  grid-column: span 4 / span 4;
+  grid-template-columns: repeat(4, minmax(0, 1fr));
+}
+
+.grid-5col {
+  grid-column: span 5 / span 5;
+  grid-template-columns: repeat(5, minmax(0, 1fr));
+}
+
+.grid-6col {
+  grid-column: span 6 / span 6;
+  grid-template-columns: repeat(6, minmax(0, 1fr));
+}
+
+.grid-7col {
+  grid-column: span 7 / span 7;
+  grid-template-columns: repeat(7, minmax(0, 1fr));
+}
+
+.grid-8col {
+  grid-column: span 8 / span 8;
+  grid-template-columns: repeat(8, minmax(0, 1fr));
+}
+
+.grid-9col {
+  grid-column: span 9 / span 9;
+  grid-template-columns: repeat(9, minmax(0, 1fr));
+}
+
+.grid-10col {
+  grid-column: span 10 / span 10;
+  grid-template-columns: repeat(10, minmax(0, 1fr));
+}
+
+.grid-11col {
+  grid-column: span 11 / span 11;
+  grid-template-columns: repeat(11, minmax(0, 1fr));
+}
+
+.grid-12col {
+  grid-column: span 12 / span 12;
+  grid-template-columns: repeat(12, minmax(0, 1fr));
+}
+
+// Grid offset.
+.grid-start-2 { grid-column-start: 2 }
+.grid-start-3 { grid-column-start: 3 }
+.grid-start-4 { grid-column-start: 4 }
+.grid-start-5 { grid-column-start: 5 }
+.grid-start-6 { grid-column-start: 6 }
+.grid-start-7 { grid-column-start: 7 }
+.grid-start-8 { grid-column-start: 8 }
+.grid-start-9 { grid-column-start: 9 }
+.grid-start-10 { grid-column-start: 10 }
+.grid-start-11 { grid-column-start: 11 }
+.grid-start-12 { grid-column-start: 12 }
+
+.grid-span-2 { grid-column-end: span 2 }
+.grid-span-3 { grid-column-end: span 3 }
+.grid-span-4 { grid-column-end: span 4 }
+.grid-span-5 { grid-column-end: span 5 }
+.grid-span-6 { grid-column-end: span 6 }
+.grid-span-7 { grid-column-end: span 7 }
+.grid-span-8 { grid-column-end: span 8 }
+.grid-span-9 { grid-column-end: span 9 }
+.grid-span-10 { grid-column-end: span 10 }
+.grid-span-11 { grid-column-end: span 11 }
+.grid-span-12 { grid-column-end: span 12 }

scss/global/_window.scss

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+.window-app {
+  font-family: $font-primary;
+}
+
+.rollable {
+  &:hover,
+  &:focus {
+    color: #000;
+    text-shadow: 0 0 10px red;
+    cursor: pointer;
+  }
+}