OfficialSite/assets/styles/generic/_button.scss

// ==========================================================================
// Button resets
// ==========================================================================
button,
.o-button {
    display: inline-block;
    overflow: visible;
    margin: 0;
    padding: 0;
    outline: 0;
    border: 0;
    background: none;
    color: inherit;
    vertical-align: middle;
    text-align: center;
    text-decoration: none;
    text-transform: none;
    font: inherit;
    line-height: normal;
    cursor: pointer;
    user-select: none;

    &:hover {
        text-decoration: none;
    }
}