.index-background{
    background-image: url("../img/plant2560x1440.jpg");
    background-size: cover;
    background-repeat: repeat;
    background-attachment: fixed;
    background-origin: initial;
    height: 100%;
    width: 100%;
}
.banner{
    background-image: url("../img/fbbcf3ec-a3dd-4656-8248-b4519d443f44.jpg");
    background-size: cover;
    height: 500px;
    width: 100%;
}
.welcome{
    width: 85%;
    padding-top: 300px;
    font-size: 6em;
    margin: auto;
    text-align: center;
}
@media screen and (max-width: 768px){
    .banner>h1{
        padding-top: 200px;
        font-size: 3em;
        margin-left: 1px;
        width: 100%;
    }
}
.about{
    padding-top: 30px;
    padding-left: 80px;
    padding-right: 50px;
    text-align: left;
}
.about-pic{
    width: 80%;
    padding-top: 50px;
    padding-bottom: 50px;
}
.middiv{
    text-align: center;
}
.head-background{
    background: none;
}
.index-a{
    position: relative;
    display: block;
    padding: 10px 0px 10px 0px;
    text-align: center;
    border: 1px solid rgba(3, 85, 122, 0.5);
    font-size: 15px;
    /*letter-spacing: 1px;*/
    color: rgba(3, 85, 122, 0.9);
    text-decoration: none;
    overflow: hidden;
}
a span{
    position: relative;
    z-index: 1;
    transition: 1s;
}
a .wave{
    position: absolute;
    top: calc(100% + 22px);
    left: 0;
    width: 100%;
    height: 100%;
    background: #72B0B7;
    transition: 0.7s;
}
a:hover .wave{
    top: 0;

}
a:hover span{
    color: rgb(253, 253, 253);
}
a .wave:before{
    content: "";
    position: absolute;
    top: -22px;
    left: 0;
    width: 100%;
    height: 22px;
    background: url(../img/素材/wave.png);
    animation: animate 1.5s linear infinite;
}
@keyframes animate {
    0%{
        background-position-x: 0;
    }
    100%{
        background-position-x: 118px;
    }
}
a{
    text-decoration: none;
}
a:link {
    text-decoration: none;
}
a:visited {
    text-decoration: none;
}
a:hover{
    text-decoration: none;
    color: #8a6d95;
}
a:active {
    text-decoration: none;
}
a:focus {
    text-decoration: none;
}