*{margin:0}:root{--primary-color: #000000;--primary-text-color: #ffffff;--header-color: rgba(0, 0, 0, .7);--card-background-color: rgba(0, 0, 0, .7);--header-hover-button-color: rgba(255,255,255);--header-hover-button-text-color: rgba(0,0,0);--header-height: 70px;--header-logo-width: 30px;--bord: solid 2px red}@media screen and (min-width: 800px){:root{--header-color: rgba(0, 0, 0, .7)}}