.flex-row{
    display: flex;
    flex-direction: row;
}
.space-between{
    justify-content: space-between;
}
.space-around{
    justify-content: space-around;
}
.t-center{
    text-align: center;
}
.index-content{
    padding: 5vw;
}
.index-title span{
    color: #f6462a;
}
.slogan{
    letter-spacing: 0.6rem;
    padding: 2rem 0 1rem 0;
    font-size: 1.5rem;
}
.relative{
    position: relative;
}
a{
    /* 清除下划线 */
    text-decoration: none;
    /* 清除默认文本颜色（通常是蓝色） */
    color: inherit;
    /* 清除点击时的焦点边框（部分浏览器） */
    outline: none;
    /* 清除点击时的背景高亮（移动端） */
    -webkit-tap-highlight-color: transparent;
}
.t-right{
    text-align: right;
}
.t-left{
    text-align: left;
}

.pop{
    position: fixed;
    top: 20vh;
    left: 110%;
    width: 80vw;
    margin: 0 10vw;
    background-image: url(../images/bg.png);
    background-size: 100% 100%;
    color: #fff;
    background-repeat: no-repeat;
    padding: 3rem 2rem 7rem 2rem;
    z-index: 99999;
}
.popup-content{
    padding-top: 0.3rem;
}
.popup-content h2{
    font-size: 1rem;
}
.popup-content p{
    font-size: 0.8rem;
}
.hero-partner{
    height: 1.5rem;
    line-height: 1.5rem;
    margin-top: 1rem;
    margin-bottom: 0.5rem;
    font-size: 0.8rem;
}
.hero-partner img{
    width: 1.5rem;
}
.authentication_into{
    background-color: #000;
    font-size: 0.8rem;
    padding: 0.3rem;
    border-radius: 0.4rem;
}
.close{
    position: absolute;
    right: -4rem;
    top: -4rem;
    width: 2rem;
    height: 2rem;
}