html, body, h1, h2, h3, p, ul, ol, li {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

img {
    max-width: 100%;
    height: auto;
}

table {
    border-collapse: collapse;
    width: 100%;
}

button {
    border: none;
    background: none;
    cursor: pointer;
}

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