body,
html {
    background-color: #f2f2f2;
}

.answer_container .banner {
    position: absolute;
    top: 110px;
    z-index: 0;
    width: 100%;
    min-width: 1200px;
    height: 260px;
    overflow: hidden;
    background-image: url(../images/dayi_banner.png);
    background-size: 1920px 260px;
    background-position: center center;
}

.answer_container .options-container {
    margin-top: 15px;
    border-radius: 10px;
    z-index: 10;
    padding: 20px 0;
    margin-top: 168px;
    width: 1200px;
    background: #fff;
}

    .answer_container .options-container .line {
        display: block;
        width: 1140px;
        height: 1px;
        background-color: #f2f2f2;
    }

    .answer_container .options-container .options-nav {
        width: 100%;
        padding: 0 30px;
    }

        .answer_container .options-container .options-nav .list {
            cursor: pointer;
            display: flex;
            flex-direction: column;
            align-items: center;
            margin-right: 35px;
            font-size: 18px;
            font-weight: bold;
            color: #333;
        }

            .answer_container .options-container .options-nav .list:after {
                margin-top: 15px;
                content: "";
                border-radius: 4px;
                right: auto;
                width: 33px;
                height: 3px;
            }

        .answer_container .options-container .options-nav .active:after {
            background-color: #4f92f0;
        }

    .answer_container .options-container > .options {
        width: 100%;
        margin-top: 20px;
        padding: 0 30px;
    }

        .answer_container .options-container > .options .title,
        .answer_container .options-container > .options .list {
            font-size: 14px;
            font-weight: 400;
            color: #555;
            padding-right: 25px;
        }

        .answer_container .options-container > .options .list {
            cursor: pointer;
        }

            .answer_container .options-container > .options .list:hover {
                color: #4f92f0;
            }

        .answer_container .options-container > .options .active {
            color: #4f92f0;
        }

.answer_container main {
    margin-top: 15px;
    width: 1200px;
}

    .answer_container main .main-content {
        height: min-content;
        width: 870px;
    }

        .answer_container main .main-content .options {
            padding-left: 35px;
            width: 100%;
            height: 45px;
            border-bottom: 1px solid #eee;
            background-color: #fff;
        }

            .answer_container main .main-content .options .list {
                cursor: pointer;
                font-size: 14px;
                font-family: Microsoft YaHei;
                font-weight: 400;
                margin-right: 50px;
            }

            .answer_container main .main-content .options .active {
                color: #0384fc;
            }

        .answer_container main .main-content .issue {
            padding: 20px;
            margin-top: 10px;
            width: 870px;
            background-color: #fff;
        }

            .answer_container main .main-content .issue .title {
                width: 810px;
                /* font-weight: bold; */
                color: #333333;
                font-size: 18px;
                line-height: 30px;
                letter-spacing: 1px;
            }

            .answer_container main .main-content .issue .not {
                cursor: pointer;
                text-align: center;
                line-height: 21px;
                margin-top: 25px;
                width: 67px;
                height: 22px;
                border: 1px solid #0384fc;
                font-size: 12px;
                font-weight: 400;
                color: #0384fc;
            }

            .answer_container main .main-content .issue .teacher {
                margin-top: 25px;
            }

                .answer_container main .main-content .issue .teacher .avatar {
                    width: 20px;
                    height: 20px;
                    border-radius: 50%;
                    background-color: #aeb1ba;
                }

                .answer_container main .main-content .issue .teacher .name {
                    margin-left: 10px;
                    display: flex;
                    align-items: center;
                    font-size: 12px;
                    font-weight: 400;
                    color: #999999;
                }

                    .answer_container main .main-content .issue .teacher .name > i {
                        display: block;
                        padding: 0 10px;
                    }

            .answer_container main .main-content .issue .explain {
                margin-top: 13px;
                font-size: 14px;
                font-weight: 400;
                color: #999;
                width: 750px;
                overflow: hidden;
                text-overflow: ellipsis;
                white-space: nowrap;
                position: relative;
                padding-left: 25px;
            }

            .answer_container main .main-content .issue .message {
                margin-top: 30px;
            }

                .answer_container main .main-content .issue .message .chunk {
                    display: flex;
                    align-items: center;
                    margin-right: 35px;
                }

                    .answer_container main .main-content .issue .message .chunk > img {
                        height: 15px;
                    }

                    .answer_container main .main-content .issue .message .chunk > p {
                        padding-left: 5px;
                        font-size: 13px;
                        font-family: Microsoft YaHei;
                        font-weight: 400;
                        color: #999999;
                    }

        .answer_container main .main-content .paging {
            margin: 0 70px;
        }

            .answer_container main .main-content .paging .page,
            .answer_container main .main-content .paging .but,
            .answer_container main .main-content .paging .num {
                font-size: 14px;
                font-weight: 400;
                color: #333;
                margin: 0 5px;
            }

            .answer_container main .main-content .paging .num {
                text-align: center;
                width: 50px;
                height: 33px;
                background: #fff;
                border: 1px solid #eee;
            }

            .answer_container main .main-content .paging .but {
                cursor: pointer;
                padding: 0 10px;
                height: 33px;
                background: #fff;
                border: 1px solid #eee;
            }

    .answer_container main .quiz {
        width: 100%;
        height: 105px;
        background: #ffffff;
        background-image: url(../images/tiwenbeijing.png);
        background-size: 100% 100%;
        border-radius: 5px;
        cursor: pointer;
    }

        .answer_container main .quiz > img {
            margin-left: 25px;
        }

        .answer_container main .quiz .describe {
            padding-left: 15px;
        }

            .answer_container main .quiz .describe > p {
                font-size: 18px;
                font-weight: bold;
                color: #3a6ff4;
                padding-bottom: 7px;
            }

            .answer_container main .quiz .describe > span {
                padding-top: 14px;
                font-size: 12px;
                font-weight: 400;
                color: #7999e0;
            }

    .answer_container main .hot-course {
        margin-top: 12px;
        height: min-content;
        width: 315px;
        background-color: #fff;
        border-bottom: 1px solid #f5f5f5;
    }

        .answer_container main .hot-course .max-title {
            width: 100%;
            padding: 20px 0;
            font-size: 16px;
            font-weight: 400;
            color: #333;
            line-height: 28px;
        }

            .answer_container main .hot-course .max-title > i {
                display: block;
                width: 3px;
                height: 20px;
                background: #0384fc;
                margin-right: 20px;
            }

        .answer_container main .hot-course .chunk {
            position: relative;
            margin-bottom: 20px;
            width: 280px;
            background-color: #f7f7f7;
            padding: 30px 19px 19px;
        }

            .answer_container main .hot-course .chunk .title {
                /* height: 46px; */
                font-size: 17px;
                font-weight: 600;
                color: #333;
                overflow: hidden;
                display: -webkit-box;
                -webkit-line-clamp: 2;
                -webkit-box-orient: vertical;
            }

            .answer_container main .hot-course .chunk .rank {
                margin-top: 21px;
                font-size: 12px;
                font-weight: 400;
                color: #999;
            }

            .answer_container main .hot-course .chunk .teacher {
                margin-top: 30px;
            }

            .answer_container main .hot-course .chunk .teacher-teacher {
                margin-right: 20px;
            }

                .answer_container main .hot-course .chunk .teacher-teacher > img {
                    width: 40px;
                    height: 40px;
                    border-radius: 50%;
                    background-color: #f2f2f2;
                }

                .answer_container main .hot-course .chunk .teacher-teacher > p {
                    margin-top: 10px;
                    font-size: 12px;
                    font-weight: 400;
                    color: #999;
                }

            .answer_container main .hot-course .chunk .price {
                margin-top: 15px;
                padding-top: 15px;
                border-top: 1px solid #eee;
            }

                .answer_container main .hot-course .chunk .price .val > span {
                    font-size: 14px;
                    font-weight: 400;
                    color: #de3e29;
                }

                .answer_container main .hot-course .chunk .price .val .num {
                    font-size: 20px;
                }

                .answer_container main .hot-course .chunk .price > button {
                    cursor: pointer;
                    text-align: center;
                    width: 96px;
                    height: 28px;
                    background: #fff;
                    border: 1px solid #b4dbff;
                    border-radius: 14px;
                    font-size: 12px;
                    font-weight: 400;
                    color: #0384fc;
                    line-height: 27px;
                }

                    .answer_container main .hot-course .chunk .price > button:hover {
                        background: #0384fc;
                        color: #fff;
                        border: none;
                    }

            .answer_container main .hot-course .chunk .liveStreaming {
                position: absolute;
                top: 0;
                left: 0;
                width: 50px;
                height: 20px;
                background: #f5ebe1;
                border-radius: 0px 0px 10px 0px;
                font-size: 12px;
                font-weight: 400;
                color: #8c6f55;
            }

    .answer_container main .hot-data {
        margin-top: 12px;
        height: min-content;
        width: 315px;
        background-color: #fff;
    }

        .answer_container main .hot-data .max-title {
            width: 100%;
            padding: 20px 0;
            font-size: 16px;
            font-weight: 400;
            color: #333;
            line-height: 28px;
            border-bottom: 1px solid #f5f5f5;
        }

            .answer_container main .hot-data .max-title > i {
                display: block;
                width: 3px;
                height: 20px;
                background: #0384fc;
                margin-right: 20px;
            }

        .answer_container main .hot-data .chunk {
            width: 85%;
            padding: 15px 0;
            border-bottom: 1px solid #f5f5f5;
        }

            .answer_container main .hot-data .chunk > img {
                width: 48px;
                height: 48px;
                border-radius: 4px;
            }

            .answer_container main .hot-data .chunk > p {
                width: 200px;
                font-size: 15px;
                font-weight: 400;
                color: #555555;
                line-height: 22px;
                overflow: hidden;
                display: -webkit-box;
                -webkit-line-clamp: 2;
                -webkit-box-orient: vertical;
            }

        .answer_container main .hot-data .more {
            margin: 15px 0;
            width: 251px;
            height: 40px;
            background: #e8f0fa;
            border-radius: 2px;
            text-align: center;
            font-size: 14px;
            font-family: Microsoft YaHei;
            font-weight: 400;
            color: #3274d7;
            line-height: 38px;
        }

.answer_container .fast_issue {
    display: none;
    z-index: 9999;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    margin: auto;
    background-color: rgba(0, 0, 0, 0.5);
}

    .answer_container .fast_issue .content {
        margin-left: 0;
        margin-right: 0;
        margin: 100px auto 0;
        width: 1000px;
        height: 634px;
        background: #ffffff;
        border-radius: 12px;
    }

    .answer_container .fast_issue .title_box {
        padding: 15px;
        border-bottom: 1px solid #eee;
        line-height: 1;
    }

        .answer_container .fast_issue .title_box .name {
            font-size: 18px;
            font-weight: 400;
            color: #333333;
        }

        .answer_container .fast_issue .title_box .close {
            cursor: pointer;
            font-size: 30px;
        }

    .answer_container .fast_issue .issue_nav {
        padding-top: 20px;
        margin: 0 20px;
        width: 960px;
        border-bottom: 1px solid #e8e8e8;
    }

        .answer_container .fast_issue .issue_nav .list {
            cursor: pointer;
            margin-right: 40px;
            font-size: 16px;
            font-weight: bold;
        }

            .answer_container .fast_issue .issue_nav .list:after {
                margin-top: 15px;
                content: "";
                border-radius: 4px;
                right: auto;
                width: 33px;
                height: 3px;
            }

        .answer_container .fast_issue .issue_nav .active {
            color: #0384fc;
        }

            .answer_container .fast_issue .issue_nav .active:after {
                background-color: #4f92f0;
            }

    .answer_container .fast_issue .select {
        margin: 20px;
        width: 960px;
    }

        .answer_container .fast_issue .select .name {
            width: 80px;
            font-size: 14px;
            font-weight: 400;
            color: #555555;
            line-height: 30px;
        }

        .answer_container .fast_issue .select .menu {
            width: 880px;
        }

            .answer_container .fast_issue .select .menu .list {
                cursor: pointer;
                font-size: 14px;
                font-weight: 400;
                color: #555555;
                margin: 0 5px 5px 5px;
                padding: 5px;
                border: 1px solid rgba(0, 0, 0, 0);
                border-radius: 4px;
            }

            .answer_container .fast_issue .select .menu .active {
                border: 1px solid #9fd1ff;
                background: #eef7ff;
                color: #0384fc;
            }

    .answer_container .fast_issue .write_issue {
        box-sizing: border-box;
        padding: 15px;
        margin: 0 20px;
        width: 960px;
        height: 176px;
        border: 1px solid #e5e5e5;
        resize: none;
    }

    .answer_container .fast_issue .addImg {
        margin: 44px 0 17px 20px;
        font-size: 14px;
        font-weight: 400;
        color: #999999;
        line-height: 34px;
    }

    .answer_container .fast_issue .img {
        position: relative;
        padding: 0 20px;
    }

        .answer_container .fast_issue .img .add_img {
            cursor: pointer;
        }

        .answer_container .fast_issue .img > button {
            cursor: pointer;
            position: absolute;
            right: 20px;
            text-align: center;
            line-height: 42px;
            width: 96px;
            height: 42px;
            background: #0384fc;
            border-radius: 4px;
            font-size: 14px;
            font-weight: 400;
            color: #ffffff;
        }

            .answer_container .fast_issue .img > button[disabled=disabled] {
                background: #bbb;
                color: #000;
            }

            .answer_container main .main-content .issue:hover {
                box-shadow: 0 0 25px 0 #e5e5e5;
            }

.answer_container main .main-content .issue .title:hover a {
    color: #0384fc;
}

.answer_container main .main-content .issue .title a {
    color: #333;
    -webkit-line-clamp: 2;
    text-overflow: ellipsis;
    overflow: hidden;
    display: -webkit-box;
    -webkit-box-orient: vertical;
}

.align-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}
.justify-end {
    justify-content: flex-end;
}

.justify-center {
    justify-content:  center;
}
    

    .flex {
        display: flex;
    }