.crs-wrap {
    position: relative;
    box-sizing: border-box;
}

.crs-wrap * {
    box-sizing: border-box;
}

.crs-screen {
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.crs-screen-roll {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    display: flex;
    flex-wrap: wrap;
    transition: left 0.5s;
}

.crs-screen-item {
    width: 100%;
    height: 100%;
    background-position: center;
    background-size: cover;
}

.crs-screen-item-content {
    width: 100%;
    height: calc(100% - 50px);
    font-family: arial;
    padding: 50px;
}

.crs-bar {
    width: 100%;
    height: 50px;
    position: absolute;
    bottom: 0;
    left: 0;
    padding: 10px;
}

.crs-bar-roll-current {
    width: 68px;
    height: 38px;
    border-radius: 12px;
    border: 2px solid white;
    position: absolute;
    z-index: 1;
    left: 0;
    right: 0;
    margin: auto;
    top: 5px;
}

.crs-bar-roll-wrap {
    height: 30px;
    overflow: hidden;
    border-radius: 8px;
    position: relative;
}

.crs-bar-roll {
    height: 30px;
    display: inline-flex;
    flex-wrap: wrap;
    position: absolute;
    left: 0;
    transition: left 0.2s;
}

.crs-bar-roll-item {
    width: 60px;
    height: 30px;
    border-radius: 8px;
    background-color: #fff;
    background-size: cover;
    background-position: center;
    opacity: 0.85;
    cursor: pointer;
}

.crs-bar-roll-item:not(:last-child) {
    margin-right: 10px;
}