header nav a{transition:.5s;border-bottom:2px solid transparent;letter-spacing:1px;font-weight:300;font-size:14px;color:var(--main-color);color:#ccc;position:relative;transition:all .3s ease}header nav a:after{content:"";position:absolute;bottom:-5px;left:0;width:0;height:2px;background:linear-gradient(135deg,#e0b298,#d4a276);transition:width .3s ease}header nav a:hover:after{width:100%}header nav a:hover{color:var(--main-color-dark)}