ul, ol {
    list-style: none;
    margin: 0;
    padding: 0;
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

a {
    text-decoration: none;
    color: inherit;
}

button,
.btn {
    background: none;
    border: none;
    padding: 0;
    margin: 0;
    cursor: pointer;
}