:root{--main-color:#ff851b;--secondary-color:#0074d9}html{color:#333;font-size:1rem;font-family:sans-serif}.color0{color:var(--main-color)}.color1{color:var(--secondary-color)}.white{color:#fff}header{font-weight:900;color:var(--main-color);text-align:center}hr{display:block;height:1px;border:0;border-top:1px solid var(--main-color);margin:1em 0;padding:0}footer{background-color:var(--main-color)}button{background-color:initial;outline:none;cursor:pointer;border:none;transition:all .3s}button:hover{opacity:.75}.blink{animation:blinker 1s linear infinite}@keyframes blinker{50%{opacity:0}}