.loader{--height-of-loader:4px;--loader-color:#6366f1;width:130px;height:var(--height-of-loader);background-color:#0003;border-radius:30px;display:block;position:relative}.loader:before{content:"";background:var(--loader-color);border-radius:30px;width:0%;height:100%;animation:1s ease-in-out infinite moving;position:absolute;top:0;left:0}@keyframes moving{50%{width:100%}to{width:0;right:0;left:unset}}