html restablecer código de estilo css

html,body,div,span,applet,object,iframe,
h1,h2,h3,h4,h5,h6,p,blockquote,pre,a,abbr,
var,b,u,i,center,dl,dt,dd,ol,ul,li,fieldset,
form,label,legend,table,caption,tbody,tfoot,thead,
tr,th,td,article,aside,canvas,details,embed,figure,
figcaption,address,big,cite,code,del,dfn,em,img,ins,
kbd,q,s,samp,small,strike,strong,sub,sup,tt,var,b,u,
i,center,dl,dt,dd,ol,ul,li,fieldset,form,label,table,
caption,tbody,tfoot,thead,tr,th,td,article,aside,canvas,
details,embed,figure,figcaption,footer,header,hgroup,
menu,nav,output,ruby,section,summary,time,mark,audio,
video{
    margin: 0; 
    padding:0; 
    border: 0;
    font-size: 100%;
    font: inherit;
    vertical-align: baseline;
}
article,aside,details,figcaption,figure,footer,header,
hgroup,menu,nav,section{
    display: block;
}
body {
    line-height: 1;
    box-sizing:border-box;
}
q {
    quotes: none;
}
blockquote::before,blockquote::after,q:before,q:after {
    content: '';
    content: none;
}
table{
    border-collapse: collapse;
    border-spacing: 0;
}
a{
    text-decoration: none;
    color: inherit;
}