slide.css

.hide {
    display: none;
}
.menu-content {
    height: 100px;
    border: 1px solid red;
}
.item {
    /*display: inline-block;*/
    /*opacity: 0.6;*/
    filter: grayscale(100%);
}
.item.highlight {
    filter: initial;
    /*opacity: 1;*/
}
.item.highlight img {
    width: 150px;
    height: 150px;
}
img {
    /*transition 这个 css 指定了某个属性发生变化的时候自动使用动画效果和动画时间*/
    transition: width 1s, height 1s;
}
.item img {
    width: 100px;
    height: 100px;
}

/*3. 轮播图*/
.slide {
    position: relative;
    width: 800px;
}
.slide-image {
    display: none;
    cursor: pointer;
}
/*slide-image*/
.active {
    display: inline-block;
}
.slide-button {
    width: 24px;
    height: 30px;
    color: #fff;
    background: #000;
    opacity: 0.3;
    border: 0;
    outline: 0;
    cursor: pointer;
}
.slide-left {
    left: 0;
    border-top-right-radius: 20px;
    border-bottom-right-radius: 20px;
}
.slide-right {
    right: 0;
    border-top-left-radius: 20px;
    border-bottom-left-radius: 20px;
}
.vertical-center {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 15px;
}
.slide-indicators {
    position: absolute;
    bottom: 10px;
    width: 100%;
    text-align: center;
}
.slide-indi {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 1px solid rgba(0,0,0,.05);
    background: rgba(255,255,255,.4);
}
.white {
    background: white;
}