cssgridgenerator
App UI

CSS Grid Login Page Layout Generator

A centred sign-in card beside a branded panel, folding to just the form on mobile.

Open in
1040px

Drag across the grid to draw an area. Arrow keys nudge, Shift + arrows resize.

space to pan · ⌘scroll to zoom
1minmax(0, 1fr)2minmax(0, 1fr)3
11fr2
form1 / 1 / 2 / 2
brand1 / 2 / 2 / 3

Named areas. The CSS is a picture of the layout, and only the properties that actually change get repeated inside each media query.

.auth {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: 1fr;
  gap: 0;
  grid-template-areas:
    "form";
}

.auth > .form { grid-area: form; }
.auth > .brand { display: none; }

@media (min-width: 860px) {
  .auth {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    grid-template-areas:
      "form brand";
  }

    .auth > .brand { grid-area: brand; }
}

How this layout works

Two halves at desktop, one at mobile — and the half that disappears is the decorative one. The brand panel is the first thing to go when space is short, because nobody signs in for the photograph.

Centre the form with place-self: center on the item, not with margins on a wrapper. One declaration centres it on both axes inside its half of the grid.

Cap the form at around 380px. A sign-in form stretched to 700px puts the label and its input at opposite ends of the eye line, which is slower to fill in and looks broken on an ultrawide monitor.

Every property used here is listed in the CSS Grid cheat sheet, with the reason to reach for it.

Frequently asked questions

How do I centre a login form inside half a split screen?
place-self: center on the form. One declaration centres it on both axes inside its grid area, with no wrapper and no transform.
How wide should a sign-in form be?
Around 380px. Stretched wider, the label and its input end up at opposite ends of the eye line, which is slower to fill in and looks broken on a wide monitor.
How do I center a grid in CSS?
Use justify-content: center on the grid container to centre the whole grid inside it, and margin-inline: auto with a max-width to centre the container in the page. These are different jobs: the first moves the tracks within the container, the second moves the container itself.
How do I center items inside a CSS grid?
Set place-items: center on the container. That is shorthand for align-items plus justify-items, and it centres every item inside its own cell on both axes. For a single item, use place-self: center on that item instead.
How do I make a CSS grid responsive?
Use grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)) and it reflows at every width with no media queries at all. Add breakpoints only when the exact column count matters, or when the layout has to change shape rather than just wrap.
When should I use CSS Grid instead of Flexbox?
Use Grid when things must line up in two directions at once, and Flexbox when content flows along one axis. A page skeleton or dashboard is Grid; a navbar or row of buttons is Flexbox. They nest: Grid for the page, Flexbox inside the cells.

How to use it

  1. Open the pattern

    The login page layout loads into the editor already responsive, with every breakpoint set up.

  2. Change the tracks

    Edit the column and row sizes in the Tracks panel. Anything valid in a track list works.

  3. Redraw at another width

    Move the ruler past a breakpoint marker and rearrange. Only the placement changes.

  4. Copy the code

    Take CSS, HTML, Tailwind or a shadcn component. The media queries are already written.

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