*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
}

body {
    overflow: hidden;
}

button,
input,
textarea,
select {
    font: inherit;
}

button {
    border: 0;
    padding: 0;
}

img,
video,
canvas {
    display: block;
    max-width: 100%;
}

h1,
h2,
h3,
h4,
p {
    margin: 0;
}