摘要：几小块文字有白色的底色很突兀，显得难看。打开html，那儿有background color的设置，值是#FFFFFF。 对照html的颜色可以看到值是一致的，删掉背景颜色设置即可。http://www.w3school.com.cn/html/html_colors.asp ____行间距是容易调 阅读全文

摘要：1. put space on the two sides of %, not mandatory,//can be ignored.2.But we use === (three equal signs) to check if one variable's value is "equal" or "identical" to another variable's value.as == can have some odd behavior in javescript.3. backup some command used herepr 阅读全文