.bullet-screen{
    width: 329px;
    height: 30px;
    margin: 0 auto 28px;
    background: rgba(0, 0, 0, .6);
    border-radius: 15px;
    line-height: 30px;
    text-align: left;

    li {
        height: 100%;
        padding: 2px;
        line-height: 26px;
    }

    .avatar {
        width: 26px;
        height: 26px;
        border-radius: 50%;
        margin-right: 7px;
        vertical-align: middle;
    }

    & span:nth-of-type(1) {
        margin-right: 5px;
    }

    span {
        font-size: 12px;
        color: #fff;
    }
}
#user-bullet-screen {
    @extend .bullet-screen
}
