* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: sans-serif;
}

:root {
    --animation-duration: .8s;
    --grid-item-border-radius: 0;
}

body {
    background-color: #2b2d42;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    position: relative;
    transition: all var(--animation-duration) ease-out;
}

.grid {
    display: grid;
    gap: 0;
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    margin: auto;
    transition: all var(--animation-duration) ease-out;
}

.grid > div {
    background-image: url('./flowers-1280x1280.png');
    background-origin: border-box;
    transition: all var(--animation-duration) ease-out;
    border-radius: var(--grid-item-border-radius);
}

/* controls styling */
.controls {
    display: flex;
    flex-direction: column;
    position: absolute;
    justify-content: flex-start;
    align-items: flex-end;
    gap: .5rem;
    top: 1rem;
    right: 1rem;
    color: wheat;
}

.controls input {
    width: 4rem;
    font-size: 1rem;
    padding: 2px;
    border: 1px solid transparent;
}

.controls input:focus {
    outline: none;
    border-color: #0ea5e9;
}

button {
    font-size: 1rem;
    border: 1px solid transparent;
    background-color: lightgray;
    padding: 2px 6px;
    border-radius: 5px;
}