.index {
    max-width: 750px;
    width: 100%;
    margin: 0 auto;
    position: relative;
    height: 100vh;
}
.index .tab {
    position: absolute;
    width: 100%;
    display: flex;
    justify-content: space-around;
    top: 50px;
    left: 0;
}
.index .tab span {
    width: 45%;
    display: block;
    cursor: pointer;
}
.index .tab img {
    width: 100%;
}
.index .tab .active .a {
    display: block;
}
.index .tab .active .d {
    display: none;
}
.index .tab .a {
    display: none;
}
.index .tab .d {
    display: block;
}
.tree_box .operation {
    display: flex;
    justify-content: space-around;
    position: absolute;
    bottom: 10%;
    width: 100%;
    left: 0;
}
.index .tree_box.height {
    display: none;
}
.tree_box .operation div span {
    width: 100%;
    display: block;
    font-weight: bold;
    text-align: center;
    line-height: 30px;
    position: absolute;
    color: #ae0000;
    bottom: -20px;
    left: 0;
}
.tree_box .operation div {
    position: relative;
    width: 50%;
    display: flex;
    justify-content: center;
}
.index .tree_box .operation img {
    width: 80%;
    display: block;
    cursor: pointer;
}
.dialog .operation {
    display: flex;
    justify-content: space-around;
}
.dialog {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    margin: auto;
    z-index: 9;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    max-width: 750px;
    width: 100%;
    display: none;
}
.dialog>div {
    position: absolute;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
}
.dialog>div .box .lw {
    width: 30%;
    margin: 10px auto;
}
.dialog>div .box .lw img {
    width: 100%;
}
.dialog1>div .box .lw {
    display: flex;
    width: 70%;
    justify-content: center;
    flex-wrap: wrap;
}
.dialog1>div .box .lw .item {
    min-width: calc(25% - 20px);
    white-space: nowrap;
    margin: 0 10px;
}
.dialog1>div .box .lw .item .pic img {
    width: 60px;
}
.dialog1>div .box .item .name {
    width: 25%;
    color: #AE0000;
    font-weight: bold;
    width: 100%;
    margin-top: 10px;
}

.dialog>div .box .txt img {
    width: 20%;
}
.dialog>div .box .btn img {
    width: 30%;
}
.dialog>div .box {
    width: 100%;
    height: auto;
    padding: 10% 0;
    background: url("../images/bg.png") no-repeat center;
    background-size: 100% 100%;
    text-align: center;
}

.tree_box {
    height: 100vh;
    width: 100%;
}
.tree_box .box {
    width: 100%;
    height: 100%;
    display: flex;
    display: flex;
    align-items: center;
    justify-content: center;
}
.tree_box .tree {
    text-align: center;
}
/*.tree_box.low {*/
/*    background: url("../images/bg1.png") no-repeat center;*/
/*    background-size: auto 100%;*/
/*}*/
/*.tree_box.height {*/
/*    background: url("../images/bg2.png") no-repeat center;*/
/*    background-size: auto 100%;*/
/*}*/
.message {
    position: absolute;
    left: 0;
    width: 100%;
    top: 0;
    bottom: 0;
    display: none;
}
.message div {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
}
.message span {
    padding: 10px;
    color: #fff;
    border-radius: 5px;
    line-height: 30px;
    background: rgba(0, 0, 0, 0.5);
    width: 70%;
    display: inline-block;
    text-align: center;
}