@charset "utf-8";
.mid{
    height: 100vh;
    width: 100vw;
}

.banner{
    list-style: none;
    position: absolute;
    padding: 0;
    margin: auto;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    width: 1150px;
    height: 421px;
    animation: imgload1 1s linear;
}

.banner li{
    float: left;
    position: absolute;
    left: 0px;
    transition-duration: 0.4s;
    overflow: hidden;
}

.banner img{
    transition: all .5s;
    filter: grayscale(0.5);
}

.banner img:hover{
    transform: scale(1.1);
    filter: grayscale(0);
}


.banner div{
    width: 20px;
    height: 20px;
    position: absolute;
    border-radius: 50%;
    background: rgb(123, 168, 175);
    float: left;
    bottom: -100px;
}

@keyframes imgload1{
    0%{
        opacity: 0;
        margin-top: 300px;
    }100%{
        opacity: 1;
        margin-top: 170px;
    }
}