default button styles

input[type="button" i], input[type="submit" i], input[type="reset" i], input[type="file" i]::-webkit-file-upload-button, button {
    padding: 1px 6px;
}
user agent stylesheet
input[type="button" i], input[type="submit" i], input[type="reset" i], input[type="file" i]::-webkit-file-upload-button, button {
    align-items: flex-start;
    text-align: center;
    cursor: default;
    color: buttontext;
    background-color: buttonface;
    box-sizing: border-box;
    padding: 2px 6px 3px;
    border-width: 2px;
    border-style: outset;
    border-color: buttonface;
    border-image: initial;
}
user agent stylesheet
input, textarea, select, button {
    text-rendering: auto;
    color: initial;
    letter-spacing: normal;
    word-spacing: normal;
    text-transform: none;
    text-indent: 0px;
    text-shadow: none;
    display: inline-block;
    text-align: start;
    margin: 0em;
    font: 13.3333px Arial;
}
user agent stylesheet
input, textarea, select, button, meter, progress {
    -webkit-writing-mode: horizontal-tb;
}
user agent stylesheet
button {
    -webkit-appearance: button;
}