CSS Grid Cheatsheet

.grid-container {
    /* Display properties */
    display: grid;
    display: inline-grid;
    display: subgrid;

    /* Columns and rows */
    grid-template-columns: 1rem 2rem 1rem; /* Measurement units */
    grid-template-columns: 25% 50% 25%; /* Percentage units */
    grid-template-columns: 1rem auto 1rem 2fr; /* Fill remaining widths with auto or fr units */
    grid-template-columns: repeat(
        12,
        1fr
    ); /* Repeat columns without needing to write them */

    grid-template-rows: 1rem 10% auto repeat(5, 10px); /* Mix any group, same rules work for rows */

    /* Automatic columns and rows */

    grid-auto-columns: 10px; /* No matter how many columns, each column will be this same width */
    grid-auto-rows: 1rem; /* No matter how many rows, each row will be this same height */

    /* Areas */
    grid-template-areas:
        'header header'
        'main aside'
        'footer footer'; /* Grid-style */

    grid-template-areas: 'header header' 'main aside' 'footer footer'; /* Inline-style */

    /* Template shorthand */
    grid-template:
        'header header' auto
        'main aside' 100vh
        'footer footer' 10rem
        / 80% 20%;

    /* The above is the same as below long-hand */
    grid-template-columns: 80% 20%;
    grid-template-rows: auto 100vh 10rem;
    grid-template-areas:
        'header header'
        'main aside'
        'footer footer';

    /* Gaps */
    grid-row-gap: 1rem;
    grid-column-gap: 0.5rem; /* Define values separately */

    grid-gap: 1rem 0.5rem; /* Short-hand for row / column */
    grid-gap: 1rem; /* Gap in both dimensions */

    /* Item justification (horizontal or column alignment) */
    justify-items: start; /* Align items to the left */
    justify-items: center; /* Align items centered within its column */
    justify-items: end; /* Align items to the right */
    justify-items: stretch; /* (default) Fills available area (horizontally) */

    /* Item alignment (vertical or row alignment) */
    align-items: start; /* Align items to the top */
    align-items: center; /* Align items centered within its row */
    align-items: end; /* Align items to the bottom */
    align-items: stretch; /* (default) Fills available area (vertically) */

    /* Place item shorthand */
    place-items: start stretch;

    /* The above is the same as below long-hand */
    align-items: start;
    justify-items: stretch;

    /* Content justification (horizontal or column alignment) */
    justify-content: start; /* Align content to the left */
    justify-content: center; /* Align content centered horizontally within the grid */
    justify-content: end; /* Align content to the right */
    justify-content: stretch; /* (default) Fills available area (horizontally) */

    justify-content: space-around; /* Chooses a space for both sides of the columns like a left and right margin */
    justify-content: space-between; /* Chooses a space to go between columns, no margins on outside of content */
    justify-content: space-evenly; /* Chooses a space that goes between all columns and edges consistently */

    /* Content alignment (horizontal or column alignment) */
    align-content: start; /* Align content to the top */
    align-content: center; /* Align content centered vertically within the grid */
    align-content: end; /* Align content to the bottom */
    align-content: stretch; /* (default) Fills available area (vertically) */

    align-content: space-around; /* Chooses a space for the top and bottom of the rows like a top and bottom margin */
    align-content: space-between; /* Chooses a space to go between rows, no margins on outside of content */
    align-content: space-evenly; /* Chooses a space that goes between all rows and edges consistently */

    /* Place item shorthand */
    place-content: center start;

    /* The above is the same as below long-hand */
    align-content: center;
    justify-content: start;

    /* Automatic grid positioning */

    grid-auto-flow: row; /* Left-to-right rows, then top-to-bottom*/
    grid-auto-flow: column; /* Top-to-bottom columns, then left-to-right */
    grid-auto-flow: dense; /* Responds with best-guess on left-to-right, top-to-bottom order with advanced layouts */

    /* There is one final shorthand for all container properties in one */

    /* Explicit grid columns, rows, and areas */
    grid:
        'header header' auto
        'main aside' 100vh
        'footer footer' 10rem
        / 80% 20%; /* You can include a template as the only value, which is equivalent to below */
    grid-template:
        'header header' auto
        'main aside' 100vh
        'footer footer' 10rem
        / 80% 20%; /* Which is again equivalent to below */
    grid-template-columns: 80% 20%;
    grid-template-rows: auto 100vh 10rem;
    grid-template-areas:
        'header header'
        'main aside'
        'footer footer';

    /* Automatic grid flows */
    grid: 1rem / auto-flow dense 1fr; /* You can include rows, a flow, and automatic columns, which is equivalent to below */
    grid-template-rows: 1rem;
    grid-auto-flow: dense;
    grid-auto-columns: 1fr;

    grid: auto-flow dense 1rem / repeat(10, 10%); /* Conversely, you can do the same thing with automatic rows, and defined columns */
    grid-auto-flow: dense;
    grid-auto-rows: 1rem;
    grid-template-columns: repeat(10, 10%);
}

.grid-child {
    /* Column position */
    grid-column-start: 1;
    grid-column-end: 2;

    grid-column: 1 / 2; /* Short hand */
    grid-column: 1 / span 2; /* Span 2 columns without explicitly defining an endpoint */
    grid-column: 1; /* Start in and occupy a single column */

    /* Row position */
    grid-row-start: 2;
    grid-row-end: 4;

    grid-row: 2 / 4; /* Short hand */
    grid-row: 2 / span 3; /* Span 3 rows without explicitly defining an endpoint */
    grid-row: 1; /* Start in and occupy a single row */

    /* Area positioning */
    grid-area: header; /* You can use a named grid area from the container */

    grid-area: 2 / 1 / 4 / 2; /* Or you can use positioning. This is equivalent to... */
    grid-row-start: 2;
    grid-column-start: 1;
    grid-row-end: 4;
    grid-column-end: 2;

    /* Self justification (horizontal or column alignment) */
    justify-self: start; /* Align item to the left */
    justify-self: center; /* Align item centered within its column */
    justify-self: end; /* Align item to the right */
    justify-self: stretch; /* (default) Fills available area (horizontally) */

    /* Self alignment (vertical or row alignment) */
    align-self: start; /* Align item to the top */
    align-self: center; /* Align item centered within its row */
    align-self: end; /* Align item to the bottom */
    align-self: stretch; /* (default) Fills available area (vertically) */

    /* Placement shorthand */
    place-self: start stretch;

    /* The above is the same as below long-hand */
    align-self: start;
    justify-self: stretch;
}