index.css

@import url('https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&display=swap');

:root {
    --red: hsl(0, 78%, 62%);
    --cyan: hsl(180, 62%, 55%);
    --orange: hsl(34, 97%, 64%);
    --blue: hsl(212, 86%, 64%);
    --very-dark-blue: hsl(234, 12%, 34%);
    --grayish-blue: hsl(229, 6%, 66%);
    --very-light-gray: hsl(0, 0%, 98%);
    --font-size: 15px;
    --font-family: "Poppins";
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-family);
}

body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: var(--very-light-gray);
    color: var(--grayish-blue);
}

h1, h2 {
    color: var(--very-dark-blue);
}

p {
    font-size: var(--font-size);
    font-weight: 400;
}

#heading1 {
    font-weight: 200;
}

h1 {
    font-weight: 600;
}

header {
    text-align: center;
    margin-top: 3em;
    display: flex;
    flex-direction: column;
    gap: var(--space-s);
}

main {
    display: grid;
}

.card {
    background-color: white;
    border-radius: 0.5em;
    box-shadow: 0 1em 2em -1em var(--grayish-blue);
    padding: 2em 2em 0em 2em;
    margin: 2em;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: 0 1em 2em -1em var(--very-dark-blue);
    cursor: pointer;
    transition: all 0.3s ease;
}

.card img {
    margin-bottom: 1em;
    width: 4em;
    height: auto;
    align-self: flex-end;
    justify-content: flex-end;
}

.card:nth-child(1) {
    border-top: 0.3em solid var(--cyan);
}

.card:nth-child(2) {
    border-top: 0.3em solid var(--red);
}

.card:nth-child(3) {
    border-top: 0.3em solid var(--orange);
}

.card:nth-child(4) {
    border-top: 0.3em solid var(--blue);
}

@media (min-width: 28em) {
    main {
        grid-template-columns: repeat(5, 1fr);
        grid-template-rows: 5% 35% 5% 35% 5%;
    }

    .card {
        width: 22em;
    }

    .card:nth-child(1) {
    grid-column-start: 2;
    grid-row-start: 3;
    align-self: center;
}

 .card:nth-child(2) {
    grid-column-start: 3;
    grid-row-start: 2;
    align-self: end;
}
.card:nth-child(3) {
    grid-column-start: 3;
    grid-row-start: 4;
    align-self: start;
}
.card:nth-child(4) {
    grid-column-start: 4;
    grid-row-start: 3;
    align-self: center;
}
}