How to remove the border in input box

When we make the registration page, we often need to eliminate the border of input, when we need to use two properties

One is input in the inactive state, not the actual border, the code rule is Border:none, and when the mouse is moved to input box, you need to use Outline:medium, to remove the border, the code is as follows

　　

. table_box2{
    height:30px;
    width:180px;
    Border:none;
    Float:left;
    Zoom:1;
    Outline:medium;

Special attention should be paid to the point, here try not to use border:0, and outline:0.

How to remove the border in input box