[html] remove inner shadow of text input

So I have a text input, im using html5, on chrome, and I want to change the look of a text input, I've removed the outline on focus (orange on chrome), I set the background to a light color #f1f1f1 but now there is like a thicker border on the top and left sides, like it's meant to look pushed in, when there is no change in background color this doesn't happen. How do I remove it? Sorry I can't provide a picture, on a mobile device.

It happens on chrome, ie, and Firefox, can't test any others.

here is a small snippet that might be cool to try out:

input {
border-radius: 10px;
border-color: violet;
border-style: solid;
}

note that: border-style removes the inner shadow.

input {_x000D_
    border-radius: 10px;_x000D_
    border-color: violet;_x000D_
    border-style: solid;_x000D_
  }

<input type="text"/>

Try this
outline: none;

live demo https://codepen.io/wenpingguo/pen/KQgbXq

None of the solution are working currently. Here is my solution. You can add prefixes.

box-shadow: inset 0px 0px 0px 0px red;

Set border: 1px solid black to make all sides equals and remove any kind of custom border (other than solid). Also, set box-shadow: none to remove any inset shadow applied to it.

This is the solution for mobile safari:

-webkit-appearance: none;

as suggested here: Remove textarea inner shadow on Mobile Safari (iPhone)

All browsers, including Safari (+ mobile):

input[type=text] {   
    /* Remove */
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    
    /* Optional */
    border: solid;
    box-shadow: none;
    /*etc.*/
}

Add border: none or border: 0 to remove border at all, or border: 1px solid #ccc to make border thin and flat.

To remove ghost padding in Firefox, you can use ::-moz-focus-inner:

::-moz-focus-inner {
    border: 0;
    padding: 0;
}

See live demo.

I'm working on firefox. and I was having the same issue, input type text are auto defined something looks like boxshadow inset, but it's not. the you want to change is border... just setting border:0; and you're done.