.header{text-align:center;@media only screen and (min-width:960px){box-shadow:0 -1px 0.1em var(--color-border-light) inset}& img{width:150px;@media only screen and (min-width:600px) and (max-width:959px){width:240px}@media only screen and (min-width:960px){margin:0.5em auto;width:170px}}}