* {
    margin: 0px;
    padding: 0px;
    font-family: "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
}

html {
    background: url(../images/beijing.jpg) no-repeat center center fixed;
    background-size: cover;
}

.nav {
    width: 75%;
    padding-top: 3rem;
    margin: 0 auto;
    font-size: 1.5rem;
    font-weight: bold;
    display: flex;
    justify-content: center;
    align-items: center;
}

.nav a {
    color: #2c3e50;
    text-decoration: none;
}

.nav li {
    list-style-type: none;
}

.navtext {
    width: 100%;
}

.one {
    float: left;
}

.two {
    float: right;
}

.two li {
    float: left;
    margin-left: 1.5rem;
}

.text {
    width: 75%;
    margin: 0 auto;
    z-index: 1;
    white-space: nowrap;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.text h1 {
    color: #2c3e50;
}

.text img {
    width: 3rem;
    margin-right: 1rem;
    margin-top: 0.5rem;
}

/* uiverse.io/动画按钮 */
.wrapper {
    display: inline-flex;
    list-style: none;
    height: 120px;
    width: 100%;
    padding-top: 25px;
    font-family: "Poppins", sans-serif;
}

.wrapper .icon {
    color: #2c3e50;
    position: relative;
    background: #fff;
    border-radius: 50%;
    margin: 10px;
    width: 50px;
    height: 50px;
    font-size: 18px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    box-shadow: 0 10px 10px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.wrapper .tooltip {
    position: absolute;
    top: 0;
    font-size: 14px;
    background: #fff;
    color: #fff;
    padding: 5px 8px;
    border-radius: 5px;
    box-shadow: 0 10px 10px rgba(0, 0, 0, 0.1);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.wrapper .tooltip::before {
    position: absolute;
    height: 8px;
    width: 8px;
    background: #fff;
    bottom: -3px;
    left: 50%;
    transform: translate(-50%) rotate(45deg);
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.wrapper .icon:hover .tooltip {
    top: -38px;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.wrapper .icon:hover span,
.wrapper .icon:hover .tooltip {
    text-shadow: 0px -1px 0px rgba(0, 0, 0, 0.1);
}

.wrapper .facebook:hover,
.wrapper .facebook:hover .tooltip,
.wrapper .facebook:hover .tooltip::before {
    background: #2c3e50;
    color: #fff;
}

.wrapper .twitter:hover,
.wrapper .twitter:hover .tooltip,
.wrapper .twitter:hover .tooltip::before {
    background: #2c3e50;
    color: #fff;
}

.wrapper .instagram:hover,
.wrapper .instagram:hover .tooltip,
.wrapper .instagram:hover .tooltip::before {
    background: #2c3e50;
    color: #fff;
}

/* uiverse.io/动画按钮结束 */

/* 电脑尺寸执行效果 */
@media screen and (min-width: 768px) {
    .text {
        font-size: 1.85rem;
    }

    .people img {
        display: block;
        /* 在电脑端显示图片 */
    }

    .people {
        width: 100%;
        margin: 0 auto;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
    }

    .people-img {
        width: 30vw;
        float: right;
        padding-right: 10vw;
    }

    .end {
        font-size: 1.3rem;
    }
}

/* 手机尺寸执行效果 */
@media only screen and (max-width: 768px) {
    .text {
        font-size: 1.2rem;
    }

    .people img {
        display: none;
        /* 在手机端隐藏图片 */
    }

    .end {
        font-size: 1.2rem;
    }
}

.end {
    text-align: center;
    margin: auto;
    position: absolute;
    left: 0;
    right: 0;
    bottom: 2rem;
}

.end a,
h6 {
    color: rgb(189, 189, 189);
    text-decoration: none;
}