.container {
    margin: 0 auto;
    font-size: 28px;
    border: 1px solid red;
    color: red;
    padding-left: 20px;
}
.container:after
 {
    content: ' ';
    width: 30px;
    height: 31px;
    line-height: 30px; /*  px */
    border: 1px solid blue;
}

p {
    line-height: 20px;/*px*/
    border-right: 2px solid green;
}
.article {
    font-size: 28px; display: block;margin-bottom: 14px;
}
.article .amount,
.article .count

{
    color: red;font-size:25px;margin-left: 2px;/*no*/display: inline-block;
    /*
     * 我是注释
     */
    padding: 4px; /* no */
}
.section{position: absolute;top:20px;right:20px;/*px */ margin-left:5px; /* no*/background: url('./a.png') 10px 10px no-repeat}
.section:first-child{font-size: 18px/*我是注释
    balabala...
*/
line-height: 16px;

}
pre {
    display: block;
    padding: 9.5px;
    margin: 0 0 10px;
    font-size: 13px; /*px*/
    line-height: 20px;
    word-break: break-all;word-wrap: break-word;
    white-space: pre;white-space: pre-wrap;
    background-color: #f5f5f5;
    /* border: 1px solid #ccc; */
    border: 1px solid #000;
    -webkit-border-radius: 4px;
    -moz-border-radius: 4px;
    border-radius: 4px;
}