/*#kontener {width:90vmin; height:90vmin; background-color:lightgray; margin:0 auto; overflow:hidden; outline:2px dotted black;} /* te wlasciwosci mozna zmieniac dowolnie ... chyba */
#kontener {
    width: 100%;
    height: 100%;
    padding: 0;
    position: relative;
    overflow: hidden;
}

/* te wlasciwosci i wartosci sa konieczne, jesli nie zadeklarowano ich wczesniej lub dziedzicza inne wartosci lub nie dziedzicza ich wcale lub ... */

#kontener * {
    box-sizing: border-box;
    padding: 0;
    border: 0;
    margin: 0;
}

/* te wlasciwosci sa konieczne, jesli nie (...) */

#scena {
    --skala: 1;
    transform: scale(var(--skala));
    transition: transform .2s;
}

/* USTAW WARTOSC DLA 'transition:transform...' wg potrzeby ewentualnie USUN */
#scena {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    perspective: 222vmax;
    outline: 2px dotted green;
}

/* USTAW WARTOSC DLA 'perspective', USUN 'outline' */

#rotator {
    width: 100%;
    height: 100%;
    visibility: hidden;
    transform-style: preserve-3d;
}

#pudlo {
    --wA: 444;
    --wB: 333;
    --wH: 222;
    --wG: 4;
    --rotX: -15;
    --rotY: -15;
    --rotZ: 0;
}

/* wartosci startowe dla pudla w pikselach i gradusach - wszystkie mozna ewentualnie przeniesc do ':root' */

#pudlo {
    width: calc(var(--wA) * 1px);
    height: calc(var(--wH) * 1px);
    position: absolute;
    top: 50%;
    left: 50%;
    visibility: hidden;
}

#pudlo {
    transform-style: preserve-3d;
    transform: translateX(-50%) translateY(-50%) rotateX(calc(var(--rotX) * 1grad)) rotateY(calc(var(--rotY) * 1grad)) rotateZ(calc(var(--rotZ) * 1grad));
    transition: transform .2s ease-out;
}

/* USTAW WARTOSC DLA 'transition:transform...' wg potrzeby ewentualnie USUN */
#pudlo:hover {
    cursor: grab;
}

/* albo inny rodzaj kursora wg zyczenia */

#pudlo {
    top: 50%;
}

/* SCIANKI */
#pudlo>* {
    visibility: visible;
    transform-style: preserve-3d;
    position: absolute;
    background: tan center/cover no-repeat scroll;
    box-shadow: 0 0 2px tan;
}

/* wartosc dla BACKGROUND albo tan albo red albo transparent albo... , albo cover albo contain - TO BARDZO WAZNE !!! */
.color-white #pudlo>* {
    box-shadow: 0 0 2px #00000052;
}

#wall1,
#wall6 {
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
}

/* top:calc(var(--wG) * -1px); bottom:calc(var(--wG) * -1px); */
#wall1 {
    transform: translateZ(calc(var(--wB) * .5px)) rotateY(0grad);
}

/* PRZÓD-s1 */
#wall6 {
    transform: translateZ(calc(var(--wB) * -.5px)) rotateY(200grad);
}

/* TYŁ-s6   */

#wall2,
#wall5 {
    width: 99%;
}

#wall2 {
    top: calc(var(--wG) * -1.8px);
    transform-origin: bottom;
    transform: translateZ(calc(var(--wB) * .5px)) rotateY(0grad) translateX(.55%) translateY(-95%) rotateX(45deg);
    background: url(textures/expandable-envelope/wall_brown_top.jpg) center/100% 100% no-repeat scroll;
    height: calc(var(--wB) * 1.5px);
}

/* GÓRA-s2 */
#wall5 {
    height: calc(var(--wB) * 1px);
    bottom: calc(var(--wG) * -1px);
    transform: translateX(.55%) translateY(+50%) rotateX(-100grad);
    background-size: 100% 100%;
}

/* DÓŁ-s5  */

#wall3,
#wall4 {
    top: 0;
    bottom: 0;
    width: calc(var(--wB) * 1px);
    background-size: 100% 100%;
}

#wall3 {
    left: 0;
    transform: translateX(-50%) rotateY(-100grad);
}

/* LEWA-3  */
#wall4 {
    right: 0;
    transform: translateX(+50%) rotateY(+100grad);
}

/* PRAWA-4 */

#wall2::before,
#wall2::after,
#wall5::before,
#wall5::after {
    position: absolute;
    top: 0;
    bottom: 0;
    width: calc(var(--wG) * 1px);
    background: tan url('textures/wall_bag_brown.jpg') center/cover no-repeat scroll;
    content: '';
}

.color-white #wall2::before,
.color-white #wall2::after,
.color-white #wall5::before,
.color-white #wall5::after {
    background: #fff url('textures/wall_bag_white.jpg') center/cover no-repeat scroll;
}

#wall2::before,
#wall5::before {
    left: calc(var(--wG) * -1px);
    transform-origin: right;
    transform: rotateY(-100grad);
}

#wall2::after,
#wall5::after {
    right: calc(var(--wG) * -1px);
    transform-origin: left;
    transform: rotateY(+100grad);
}

#wall3::before,
#wall3::after,
#wall4::before,
#wall4::after {
    position: absolute;
    height: 2px;
    left: 1px;
    right: 1px;
    background: tan url(textures/wall_brown.jpg);
    content: '';
}

.color-white #wall3::before,
.color-white #wall3::after,
.color-white #wall4::before,
.color-white #wall4::after {
    background: #fff url(textures/wall_white.jpg);
}

#wall3::before,
#wall4::before {
    top: 0;
    transform-origin: top;
    transform: rotateX(-100grad);
}

#wall3::after,
#wall4::after {
    bottom: 0;
    transform-origin: bottom;
    transform: rotateX(+100grad);
}

#pudlo>*>div {
    transform-style: flat;
    width: 100%;
    height: 100%;
    box-shadow: 0 0 9px rgba(1, 1, 1, .25) inset
}

/* 'box-shadow' mozna zmodyfikowac lub usunac - w zaleznosci od efektu finalnego; tu mozna tez dodac inne wlasciwosci */

/* skrecany */
#handle1 {
    position: absolute;
    bottom: 100%;
    left: calc(50% - 70px);
    width: 140px;
    height: 129px;
    transform: translateZ(calc(var(--wB) * 0.5px)) rotateY(0grad);
    background: url(textures/wall_bag_brown_handle_skrecany.png?v1) center center no-repeat;
    background-size: cover;
    box-shadow: none !important;
}

/* skrecany */
#handle2 {
    position: absolute;
    bottom: 100%;
    left: calc(50% - 70px);
    width: 140px;
    height: 129px;
    transform: translateZ(calc(var(--wB) * -0.5px)) rotateY(200grad);
    background: url(textures/wall_bag_brown_handle_skrecany.png?v1) center center no-repeat;
    background-size: cover;
    box-shadow: none !important;
}

/* plaski */
#handle3 {
    position: absolute;
    bottom: 100%;
    left: calc(50% - 70px);
    width: 140px;
    height: 54px;
    transform: translateZ(calc(var(--wB) * 0.5px)) rotateY(0grad);
    background: url(textures/wall_bag_brown_handle_plaski.png?v1) center center no-repeat;
    background-size: cover;
    box-shadow: none !important;
}

/* plaski */
#handle4 {
    position: absolute;
    bottom: 100%;
    left: calc(50% - 70px);
    width: 140px;
    height: 54px;
    transform: translateZ(calc(var(--wB) * -0.5px)) rotateY(200grad);
    background: url(textures/wall_bag_brown_handle_plaski.png?v1) center center no-repeat;
    background-size: cover;
    box-shadow: none !important;
}

#pudlo .wall-inner {
    background: center/cover no-repeat scroll;
    box-shadow: none;
    backface-visibility: hidden;
    background-size: 100% 100%;
}