题目内容

在HTML5中,哪个属性能够向用户显示描述性说明或者提示信息

A. required
B. formvalidate
C. validate
D. placeholder

查看答案

搜索结果不匹配？点我反馈

更多问题

A. background-size
B. background-repeat
C. background-image
D. background-position

A. linear-gradient
B. radial-gradient
C. repeating-gradient
D. no-repeat

A. border:2px solid red;
B. border-bottom:2px solid red;
C. border-style:2px solid red;
D. border-color:2px solid red;

A. top
B. right
C. bottom
D. left