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

html, body {
    height: 100%;
    background-color: #000;
}

:root {
    --transition: 1.75s cubic-bezier(.2, .6, 0, 1);
}

.slider {
    height: 100%;
}

.slider__layer {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    will-change: transform;
    /* transition: var(--transition)!important; */
}

.slider__layer::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 1;
    box-shadow: inset 0 0 250px rgb(0 0 0 / .3);
}

.slider__item {
    overflow: hidden;
}

.slider__wrapper {
    will-change: transform;
    transform-style: preserve-3d;
    /* transition: var(--transition)!important; */
}

/* preloader */

.loader {
    background: none repeat scroll 0 0 #ffffff;
    box-shadow: inset 0 0 250px rgb(0 0 0 / .3);
    bottom: 0;
    height: 100%;
    left: 0;
    position: fixed;
    right: 0;
    top: 0;
    width: 100%;
    z-index: 9999; 
}
  
.loader_inner {
    background-image: url("../img/preloader/preloader_2.gif");
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center center;
    background-color: transparent;
    height: 300px;
    width: 300px;
    margin-top: -150px;
    margin-left: -150px;
    left: 50%;
    top: 50%;
    position: absolute; 
}