thank-you.css

* {
    box-sizing: border-box;
}

body {
    background-color: hsl(216, 12%, 8%);
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100vw;
    height: 100vh;
    margin: 0;
}

div {
    background-color: hsl(213, 19%, 15%);
    border-radius: 15px;
    width: 400px;
    padding: 36px 28px 28px 28px;
    text-align: center;
}

h1 {
    font-family: 'Overpass', sans-serif;
    font-weight: 700;
    color: hsl(0, 0%, 100%);
}

svg + p {
    color: hsl(25, 97%, 53%);
    font-family: 'Overpass', sans-serif;
    font-weight: 400;
    background-color: hsl(213, 19%, 18%);
    border-radius: 20px;
    padding: 8px;
    margin: 30px 70px 34px 70px;
}

h1 + P {
    font-family: 'Overpass', sans-serif;
    font-weight: 400;
    font-size: 15px;
    color: hsl(217, 12%, 63%);
    line-height: 24px;
}