body {
    margin: 0;
}
.main-content {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

@media screen and (min-width: 1200px) {
    .page-cover {
        display: flex;
        align-items: center;
        justify-content: center;
        flex-direction: column;
        height: 298px;
        background-size: 100% 100%;
        background-image: url(/static/img/help_top.png);
    }
    h1 {
        text-align: center;
    }
    .sub-tl {
        text-align: center;
        color: rgb(102, 102, 102);
    }
    .qa-index {
        width: 20px;
        height: 20px;
        background: linear-gradient(312deg, rgb(29, 185, 79) 0%, rgb(45, 234, 106) 100%);
        color: white;
        text-align: center;
        line-height: 20px;
        border-radius: 4px;
        margin-right: 10px;
    }
    .qa-list {
        list-style: none;
    }
    .qa-question {
        font-weight: bold;
        font-size: 16px;
        cursor: pointer;
    }
    .qa-answer {
        display: none;
        color: rgb(0, 125, 57);
        background-color: rgb(244, 255, 249);
        padding: 11px 15px;
        margin: 10px 0px;
    }
    .qa-answer.show {
        display: block;
    }
    .qa-list li {
        margin: 20px 0;
        padding-bottom: 10px;
        border-bottom: 1px solid rgb(240, 240, 240);
    }
    .qa-tl {
        display: flex;
        align-items: center;
    }
}

@media screen and (max-width: 1200px) {
    .page-cover {
        display: flex;
        align-items: center;
        justify-content: center;
        flex-direction: column;
        height: 162px;
        background-size: 100% 100%;
        background-image: url(/static/img/help_top_mobile.png);
    }
    h1 {
        text-align: center;
    }
    .sub-tl {
        text-align: center;
        color: rgb(102, 102, 102);
    }
    .qa-index {
        width: 20px;
        height: 20px;
        background: linear-gradient(312deg, rgb(29, 185, 79) 0%, rgb(45, 234, 106) 100%);
        color: white;
        text-align: center;
        line-height: 20px;
        border-radius: 4px;
        margin-right: 10px;
    }
    .qa-list {
        list-style: none;
    }
    .qa-question {
        font-weight: bold;
        font-size: 16px;
        cursor: pointer;
    }
    .qa-answer {
        display: none;
        color: rgb(0, 125, 57);
        background-color: rgb(244, 255, 249);
        padding: 11px 15px;
        margin: 10px 0px;
    }
    .qa-answer.show {
        display: block;
    }
    .qa-list li {
        margin: 20px 0;
        padding-bottom: 10px;
        border-bottom: 1px solid rgb(240, 240, 240);
    }
    .qa-tl {
        display: flex;
        align-items: center;
    }
}