/* Font: "Neon Glow" by weknow (https://www.fontspace.com/neon-glow-font-f14014) */ @font-face { } * { box-sizing: inherit; margin: 0; padding: 0; } html { background-color: #101010; box-sizing: border-box; } main { align-items: center; display: flex; justify-content: center; min-height: 100vh; } #gasses { display: flex; flex-wrap: wrap; justify-content: center; > * { margin: 2rem; } } .gas { --blur: 1.75rem; --box-blur: calc(0.5 * var(--blur)); --glow: var(--color); --size: 12rem; align-items: center; border-radius: 12px; border: 4px solid currentColor; box-shadow: /* --- "glass" tube --- */ /* inside */ inset 0 0 0 2px rgba(0, 0, 0, 0.15), /* outside */ 0 0 0 2px rgba(0, 0, 0, 0.15), /* --- glow --- */ /* inside */ inset 0 0 var(--box-blur) var(--glow), /* outside */ 0 0 var(--box-blur) var(--glow); color: var(--color, white); display: inline-flex; flex-direction: column; font-family: system-ui, sans-serif; height: var(--size); justify-content: space-around; padding: 1rem; width: var(--size); &.he { --color: #FCEAAC; filter: saturate(175%); } &.ne { --color: #FDA802; filter: brightness(110%); } &.ar { --color: #E555C7; filter: brightness(125%); } &.kr { --color: #B7E7F7; filter: saturate(200%); } &.xe { --color: #C4C4C6; filter: brightness(105%); } }