*,
:after,
:before {
    box-sizing: inherit;
    margin: 0;
    padding: 0
}

body,
html {
    height: 100%;
    width: 100%
}

.banner {
    background: #fff;
    border: 1px solid #ccc;
    box-sizing: border-box;
    cursor: pointer;
    height: 250px;
    left: 50%;
    overflow: hidden;
    position: relative;
    position: absolute;
    transform: translate(-50%, -50%);
    top: 50%;
    width: 300px
}

.banner .butnWrapper {
    position: relative;
  top: 68%;
    left: 56%;
    z-index: 6
}

.banner .butnWrapper .butnBack img,
.banner .butnWrapper .butnFront img {
    width: 38%
}

.preloader {
    background: #fff;
    height: 100%;
    position: absolute;
    width: 100%;
    z-index: 999
}

.preloader .circle {
    animation: a .5s linear infinite;
    border: 5px solid #ddd;
    border-bottom-color: #333;
    border-radius: 50%;
    height: 40px;
    left: 50%;
    margin-left: -22.5px;
    margin-top: -22.5px;
    position: absolute;
    top: 50%;
    transition: all .7s ease-in-out;
    width: 40px;
    display: none
}

@keyframes a {
    0% {
        transform: rotate(0deg)
    }
    to {
        transform: rotate(1turn)
    }
}