html {
    box-sizing: border-box;
    width: 99vw;
    overflow-x: hidden;
}

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

body {
    margin: 0;
    padding: 0;
    width: 100%;
    position: relative;
    overflow-x: hidden;
}

img, embed, 
object, video {
    max-width: 100%;
}