.help {
    display: flex;
    flex-direction: row;
}

.help_left {
    padding: 40px;
    border-right: 10px solid #aaa;
    background-color: #eee;
    border-radius: 10px;
    min-width: 280px;
}


@media screen and (max-width: 750px) {
    /* Bootstrap的sm断点，或自定义断点 */
    .help {
        flex-direction: column; /* 设置为列方向，即上下排列 */
    }

    .help_left {
        border-right: 0;
    }

    .help_right {
        width: 100%;
        height: calc(100vh - 220px);
        padding: 20px !important;
    }
    .link-style {
            flex-direction: column;
            justify-content: space-around; /* 如果需要的话，恢复原始的间距效果 */
        }
}


.help_right {
    width: 100%;
    height: calc(100vh - 220px);
    padding: 0 0 0 40px;
}