header h1{font-size:clamp(2rem,1.33rem + 1.8vw,3.13rem);line-height:1.2;font-weight:400;letter-spacing:.025em}header h1{position:relative;padding-top:48px}header h1::before{content:"";position:absolute;top:0;left:0;width:200px;height:1px;background-color:#000}