Ghost/ghost/admin/app/styles/patterns/_shame.scss

// ------------------------------------------------------------
// Shame
//
// A home for Styles that need to die in a fire, but are used
// in lots of places.
//
// * Floating Header
// * Scroll Shadows
// ------------------------------------------------------------


//
// Floating Header
// --------------------------------------------------

// Semi-opaque fixed-position headers - used on content/editor
.floatingheader {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 400;
    height: 40px;
    padding: 10px 20px;
    font-size: 1.3rem;
    text-transform: uppercase;
    color: $brown;
    background: linear-gradient(to bottom, white 0%, white 25%, rgba(255,255,255,0.9) 100%); //Transparent gradient to make bg fade out as it goes out the top

    .button {
        display: inline-block;
        font-size: 10px;
        min-height: 20px;
        height: 20px;
        padding: 3px 4px;
        vertical-align: top;

        &.button-back {
            position: relative;
            top: -2px;
            left: 3px;
            display: none;
            padding: 0 6px 0 3px;

            &:active {
                box-shadow: none;
            }

            &:before {
                left: -8px;
                border-width: 10px 8px 10px 0;
            }

            @media (max-width: 900px) {
                display: inline-block;
            }
        }
    }//.button

    small {
        font-size: 0.85em;
    }

    a,
    button {
        color: $brown;

        &:hover {
            color: $darkgrey;
        }
    }
} // .floatingheader


//
// Scroll Shadows
// --------------------------------------------------

.scrolling {

    .floatingheader {
        box-shadow: rgba(0, 0, 0, 0.03) 0 1px 3px;

        &:before {
            content: "";
            position: absolute;
            bottom: -5px;
            left: 50%;
            height: 5px;
            width: 80%;
            margin-left: -40%;
            background-image: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.05) 0%,rgba(0, 0, 0, 0) 75%,rgba(0, 0, 0, 0) 100%);
            background-position: 0px -5px;
            background-size: 100% 200%;
            z-index: -1;
        }
    }
}