* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft Yahei", sans-serif;
}

a {
    text-decoration: none;
    color: #333;
}

ul {
    list-style: none;
}

.container {
    width: 1320px;
    margin: 0 auto;
}

/* 顶部导航栏 */
.header-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 300px;
    height: 84px;
    box-sizing: border-box;
    border-bottom: 1px solid #D8D8D8;
    background: #fff;
}

.header-nav .topLogo {
    display: block;
    width: 194px;
    height: 44px;
}

.header-nav .container {
    display: flex;
    justify-content: space-between;
    margin: 0;
    width: 936px;
}

.header-nav .container a {
    color: #1A1A1A;
    font-size: 15px;
}

.header-nav .container a img {
    display: block;
    width: 20px;
    height: 20px;
}

/* Banner大图 */
.about-banner {
    width: 100%;
    height: 600px;
}

.about-banner img {
    display: block;
    width: 100%;
    height: 100%;
}

/* 面包屑 */
.breadcrumb {
    display: flex;
    align-items: center;
    height: 37px;
    background: #F5F5F5;
    font-weight: 400;
    font-size: 12px;
    color: #1A1A1A;
}

/* 底部版权 */
footer {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 37px;
    background: #000000;
    text-align: center;
    font-weight: 400;
    font-size: 12px;
    color: #FFFFFF;
    line-height: 17px;
}

/* 右侧悬浮工具 */
.float-tool {
    position: fixed;
    z-index: 9999;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
}

.float-tool .float-btn {
    display: block;
    margin-bottom: 2px;
    width: 55px;
    height: 55px;
    background-size: 100% 100%;
    position: relative;
    overflow: visible;
    cursor: pointer;
}

.float-tool .float-btn .slide-bar {
    position: absolute;
    right: 60px;
    top: 0;
    visibility: hidden;
    opacity: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: translateX(50px);
    transition: transform 0.45s ease-out,
        opacity 0.45s ease-out,
        visibility 0s ease-out 0.45s;
    color: #fff;
    background: #1E72E1;
    font-size: 16px;
    white-space: nowrap;
    height: 100%;
}

.float-tool .float-btn .slide-bar img {
    display: block;
    margin-right: 15px;
    width: 22px;
    height: 22px;
}

.float-tool .float-btn:nth-child(1) {
    background-image: url(../images/zu5.png);
}

.float-tool .float-btn:nth-child(2) {
    background-image: url(../images/zu1.png);
}

.float-tool .float-btn:nth-child(3) {
    background-image: url(../images/zu6.png);
}

.float-tool .float-btn:nth-child(4) {
    background-image: url(../images/zu7.png);
}

.float-tool .float-btn:hover .slide-bar {
    visibility: visible;
    opacity: 1;
    transform: translateX(0);
    display: flex;
    align-items: center;
    justify-content: center;
    width: auto;
    min-width: 200px;
    height: 100%;
    background: #1E72E1;
    transition: transform 0.45s ease-out,
        opacity 0.45s ease-out,
        visibility 0s ease-out 0s;
}