.slider__class1 {
    width: 100%;
    position: relative;
    z-index: 1;
}

.slider__class1-box {}

.slider__class1-item {}

.setbg {
    background: none;
    position: relative;
}

.slider__class1-prev,
.slider__class1-next {
    height: 15px;
    width: 15px;
    margin-top: -10px;
    position: absolute;
    z-index: 2;
    top: 50%;
    cursor: pointer;
}

.slider__class1-prev {
    left: -8%;
    /* transform: rotate(180deg);
    width: 0;
    height: 0;
    border: 15px solid;
    border-color: transparent transparent transparent #cecece; */
}

.slider__class1-next {
    right: -8%;
    /* transform: rotate(0deg);
    width: 0;
    height: 0;
    border: 15px solid;
    border-color: transparent transparent transparent #cecece; */
}


/* 以下為自訂義更換左右鍵符號樣式，可插入圖片*/

.slider__class1-prev::after {
    content: "";
    color: #eee;
    display: flex;
    justify-content: center;
    align-items: center;
}

.slider__class1-next::after {
    content: "";
    display: flex;
    justify-content: center;
    align-items: center;
    width: 20px;
    height: 20px;
    background-repeat: no-repeat;
}