Ghost/ghost/admin/assets/sass/layouts/setup.scss

//
// Setup
// --------------------------------------------------
// Slug: /ghost/setup/
// --------------------------------------------------
// These styles cover /ghost/setup/ which is the first
// screen that appears on a new Ghost install

.ghost-setup {
    color: $midgrey;
    background: $darkgrey;
    @media (max-width: 550px) {
        background: darken($darkgrey, 5%);
    }

    main {
        top: 15px;
        @media (max-width: 550px) {
            top: 0;
        }
    }
}

// The wrapper to center the form in all ways
.setup-box {
    display: table;
    max-width: 500px;
    height: 90%;
    margin: 0 auto;
    padding: 0;
}

// The form itself with the dark background
.setup-form {
    max-width: 530px;
    padding: 40px;
    color: lighten($midgrey, 15%);
    background: darken($darkgrey, 5%);
    border-radius: 2px;

    @media (max-width: 400px) {
        padding: 15px;
    }

    header {
        margin-bottom: 30px;
    }

    label {
        // width: 90px;
        color: $lightgrey;
        font-weight: 300;

        @media (max-width: 550px) {
            width: 100%;
        }
    }

    .form-group input {
        // width: 300px;
        padding: 7px;
        border: none;
        color: #fff;
        background: lighten($darkgrey, 10%);
        @include transition(background 0.25s ease);

        &:focus {
            border:none;
            background: lighten($darkgrey, 15%);
        }
    }

    // Chrome auto-fill style
    input:-webkit-autofill {
        -webkit-box-shadow: 0 0 0px 1000px $lightgrey inset !important;
    }

    h1 {
        margin: 0;
        font-weight: 200;
        font-size: 26px;
        letter-spacing: 0;
        color: $lightgrey;

        @media (max-width: 550px) {
            font-size: 20px;
        }
    }

    h2 {
        margin: 6px 0 0 0;
        padding: 0;
        border: none;
        font-weight: 200;
        font-size: 16px;
        letter-spacing: 0;
        color: $midgrey;
        white-space: nowrap;

        @media (max-width: 550px) {
            font-size: 14px;
        }
    }

    p {
        font-size: 12px;
        line-height: 1.4em;
        color: $midgrey;
    }

    footer {
        margin: 30px 0 5px 0;
    }

    .btn-green {
        width: 100%;
        padding: 0.9em 1.8em;
        font-size: 13px;
    }
}