/* 通用 */
* {
    padding: 0;
    margin: 0;
    cursor: default;
}

a {
    text-decoration: none;
    color: #000;
    cursor: pointer;
    display: block;
    width: 100%;
    height: 100%;
}

a:visited {
    color: #000;
    text-decoration: none;
}

img {
    -webkit-user-drag: none;
    -moz-user-drag: none;
    -ms-user-drag: none;
}

/* 下滑按钮 */
#scroll-down-icon {
    position: absolute;
    left: calc(50% - 10px);
    border-right: 3px solid;
    border-top: 3px solid;
    border-color: rgba(255, 255, 255, .5);
    border-radius: 2px;
    box-sizing: unset;
    height: 20px;
    width: 20px;
    transform: rotate(135deg);
    cursor: pointer;
    transition: .25s;
    animation: float 2s infinite;
    bottom: 40px;
}

@keyframes float {
    0% {
        bottom: 40px;
    }

    30% {
        bottom: 30px;
    }

    40% {
        bottom: 30px;
    }

    100% {
        bottom: 40px;
    }
}

#scroll-down-icon:hover {
    bottom: 30px;
    border-color: #fff;
    animation: none;
}



/* 个人标签 */
#labels {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

#labels li {
    margin-left: 10px;
    line-height: 1.5em;
    list-style: none;
    padding: 5px 20px;
    background-color: #e3e3e3;
    border-radius: 5px;
    transition: .5s;
    cursor: pointer;
    margin-bottom: 10px;
}

#labels li:hover {
    background-color: #d3d3d3;
    transform: translateY(-3px);
}

/* 子区域 */
.uni-section{
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    padding: 100px 0 0 0;
}

.uni-title{
    font-size: 25px;
}

.uni-title::after {
    content: "";
    display: block;
    width: 80%;
    height: 4px;
    background-color: #10ff10;
    margin: 20px auto;
    margin-bottom: 30px;
}