.content {
    background-color: #f3f7fa;
    display: flex;
    flex-flow: column;
    overflow-y: auto;
    overflow-x: hidden;
    margin-top: 20px;
}


/* @media (max-width: 1220px)  */

.content-item {
    width: 1366px;
    margin: 0 auto;
    display: flex;
    flex-flow: row;
    display: flex;
    justify-content: space-around;
}

.zhihui {
    background-color: white;
}

.zh-left {
    width: 50%;
    display: flex;
    flex-flow: column;
    justify-content: center;
    Microsoft YaHei,
    Arial,
    Helvetica,
    sans-serif
}

.zh-right img {
    width: 850px;
    height: auto;
    /* margin-top: 30px; */
    /* width: 50%; */
}

.zh-right {
    display: flex;
    justify-content: center;
    text-align: center;
    margin-left: 10px;
}

.zh-fr {
    margin-left: 50px;
}

.zh-f1 {
    font-size: 40px;
    font-weight: bold;
    color: #424242;
}

.zh-f2 {
    margin: 5px 0 25px 0px;
    font-size: 30px;
    font-weight: 500;
    color: #424242;
}

.zh-f3 {
    font-size: 16px;
    font-weight: 400;
    color: #91a9bf;
    display: flex;
    flex-flow: row;
    align-items: center;
}

.downbutton {
    background: linear-gradient(94deg, #0fd6ee, #187aeb);
    border-radius: 6px;
    width: 45%;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.downbutton img {
    width: 20%;
    height: 20px;
}

.downbutton span {
    margin-left: 10%;
    width: 80px;
}

.downbutton a {
    text-decoration: none;
    color: white;
    display: flex;
}