<section>
<div class="grid__container">
<div class="grid__item"></div>
<div class="grid__item"></div>
<div class="grid__item"></div>
</div>
</section>
<div class="form">
<label for="writing-mode">
writing-mode:
</label>
<select name="writing-mode" id="writing-mode">
<option value="horizontal-tb">horizontal-tb</option>
<option value="vertical-rl">vertical-rl</option>
<option value="vertical-lr">vertical-lr</option>
<option value="sideways-rl">sideways-rl</option>
<option value="sideways-lr">sideways-lr</option>
</select>
<label for="direction">direction:</label>
<select name="direction" id="direction">
<option value="ltr">ltr</option>
<option value="rtl">rtl</option>
</select>
</div>
@import url("https://fonts.googleapis.com/css2?family=Exo:wght@600&display=swap");
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
inline-size: 100vw;
min-block-size: 100vh;
display: flex;
justify-content: center;
flex-direction: column;
gap: 20px;
font-family: "Exo", Arial, sans-serif;
background-color: #f7f7f7;
padding: 20px;
}
section {
margin: 0 auto;
box-shadow: 0 0 0 6px rgb(0 0 0 / 13%);
border-radius: 3px;
min-inline-size: 80vmin;
max-block-size: 80vmin;
}
.grid__container {
inline-size: 100%;
box-shadow: 0 0 0 1px #f36;
position: relative;
}
.grid__item {
display: flex;
justify-content: center;
align-items: center;
background-color: #f7f7f7;
position: relative;
counter-increment: item;
padding: 10px;
}
.grid__item::before {
content: "i" counter(item);
color: #fff;
font-size: 1.2rem;
padding: 10px;
text-shadow: 1px 1px 0 rgba(0 0 0 / 0.25);
background-color: rgb(0 0 0 / 0.6);
background-image: conic-gradient(
from 90deg at 40% -25%,
#ffd700,
#f79d03,
#ee6907,
#e6390a,
#de0d0d,
#d61039,
#cf1261,
#c71585,
#cf1261,
#d61039,
#de0d0d,
#ee6907,
#f79d03,
#ffd700,
#ffd700,
#ffd700
);
inline-size: 32px;
aspect-ratio: 1 / 1;
display: inline-flex;
justify-content: center;
align-items: center;
border-radius: 50%;
filter: drop-shadow(0 0 3px rgb(255 255 255 / 0.5));
}
.grid__item:nth-child(n + 1) {
background-color: #f1c2c6;
}
.grid__item:nth-child(2n + 1) {
background-color: #dac2f1;
}
.grid__item:nth-child(3n + 1) {
background-color: #ccf1c2;
}
.grid__item:nth-child(4n + 1) {
background-color: #c2e9f1;
}
.grid__item:nth-child(5n + 1) {
background-color: #f1ebc2;
}
.grid__item:nth-child(6n + 1) {
background-color: #09f;
}
.grid__item:nth-child(7n + 1) {
background-color: #ff5722;
}
.grid__item:nth-child(8n + 1) {
background-color: #8bc34a;
}
.grid__item:nth-child(9n + 1) {
background-color: #f66803;
}
1 .grid__item:nth-child(10n + 1) {
background-color: #0d815f;
}
.grid__item:nth-child(11n + 1) {
background-color: #28d1c2;
}
.grid__item:nth-child(12n + 1) {
background-color: #4a28d1;
}
.form {
text-align: center;
inline-size: 100%;
}
.grid__container {
display: grid;
grid-template-columns: repeat(4, 100px);
grid-template-rows: repeat(3, 100px);
gap: 10px;
writing-mode: var(--writing-mode, horizontal-tb);
direction: var(--direction, ltr);
}
.grid__item:nth-child(1) {
grid-area: 1 / 1 / 3 / 3;
justify-self: end;
}
.grid__item:nth-child(2) {
grid-area: 2 / 3 / 4 / 5;
place-self: center;
}
.grid__item:nth-child(3) {
grid-area: 1 / 3 / 2 / 5;
align-self: end;
}
const grid = document.querySelector(".grid__container");
const selects = document.querySelectorAll("select");
selects.forEach((select) => {
select.addEventListener("change", (etv) => {
grid.style.setProperty(`--${etv.target.id}`, etv.target.value);
});
});
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This Pen doesn't use any external JavaScript resources.