html button remove border on click

1.btnName{
2	outline: none;
3}

1outline:none;

1.x-btn:focus, .button:focus, [type="submit"]:focus {
2   outline: none;
3}

1<button style="outline: none;"></button>

1<style>
2input[type="button"]
3{
4    width:120px;
5    height:60px;
6    margin-left:35px;
7    display:block;
8    background-color:gray;
9    color:white;
10    border: none;
11    outline:none;
12}
13</style>

1button,
2button:active,
3button:focus {
4  outline:none !important;
5   box-shadow: none !important;
6   outline-style: none !important;
7}