:root{
     --subject-color: #00593B;
}
/* var(--subject-color) */
body {
  font-family: "Microsoft YaHei", "微软雅黑", "PingFang SC", "苹方", "Hiragino Sans GB", "WenQuanYi Micro Hei", sans-serif;
}
*{
    padding:0;
    margin:0;
    box-sizing: border-box;
    line-height: 1.4;
    color:#333;
}
/* 以下代码的作用是让整个网页的滚动变得「平滑顺滑」，而不是瞬间跳过去 */
html {
    scroll-behavior: smooth;
}
ul,li{
    list-style: none;
}
a{
    text-decoration: none;
    color:#333;
}
input{
    border:none;
    outline: none;
    background: none;
}
textarea{
    border:none;
    outline: none;
    background: none;
}
button{
    border:none;
    outline: none;
    background: none;
}
select{
    /* 移除所有边框 */
    border: none;
    /* 移除聚焦时的轮廓线 */
    outline: none;
    /* 移除浏览器默认样式 */
    appearance: none;
}
.clearfix::after {
    content: "";
    display: block;
    clear: both;
}
.full-a{
    width:100%;
    height:100%;
    display: block;
}
.relative{
    position: relative;
}
.text-center{
    text-align: center;
}
.pointer{
    cursor: pointer;
}
.transition{
    transition: all 0.4s ease;
}

.line1{
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.line2{
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    text-overflow: ellipsis;
    overflow: hidden;
}
.line3{
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
    text-overflow: ellipsis;
    overflow: hidden;
}
.line4{
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 4;
    text-overflow: ellipsis;
    overflow: hidden;
}