Html5 input attribute usage example

Comments: Today, I am new to html + css3. I feel pretty good. The following describes the input attributes used. If you are interested, read them, I hope it will be helpful to you. It is awesome to answer html5 + css3 today. Next I will introduce the input attributes I used today.
 
The html5 code is as follows:

The Code is as follows:
<Input type = "text" placeholder = "Enter and press enter to search" autofocus x-webkit-speech/>
By default, placeholder prompts the character autofocus. When the page is loaded, a focus button x-webkit-speech is obtained for Voice Search, the webkit kernel supports the types of files that can be uploaded according to accept (only applicable to type = file)
Alt specifies that the image input control replaces the text autocomplete and specifies whether to use the automatic completion function of the input field. The required input field is required. The interval pattrn between input numbers is used to perform regular matching on the input content.