$row-height: 37px;

.toolbar {
    position: fixed;
    width: 100%;
    height: $row-height;
    z-index: 1;

}

.feed {
    .header {
        position: fixed;
        width: 100%;
        top: $row-height;
        z-index: 1;
    }

    .body {
        margin-top: $row-height * 2;
    }
}