@layer reset {
    body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,form,fieldset,p,blockquote,th,td {
        margin:0; 
        padding:0; 
    }
    body {
        display: flow-root;
    }
    img {
        max-width: 100%;
        display: block;
    }
    * {
        box-sizing: border-box;
    }
}