*, *:before, *:after {
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
}
* {
    margin: 0;
    padding: 0;
}
img {
    max-width: 100%;
    display: block;
}
h1, h2, h3, h4, h5, h6 {
    text-wrap: balance;
}