style.css

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;700&family=Overpass:wght@700&display=swap');

:root {
    --white: hsl(0, 0%, 100%);
    --lt-gray: hsl(212, 45%, 89%);
    --gray-blue: hsl(220, 15%, 55%);
    --dk-blue: hsl(218, 44%, 22%);
}

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

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

.card {
    background-color: var(--white);
    width: 90%;
    height: 525px;
    border-radius: 20px;
    margin: 0 auto;
    text-align: center;
    padding-top: 20px;
    -webkit-box-shadow: 11px 8px 21px -5px rgba(0,0,0,0.6); 
    box-shadow: 11px 8px 21px -5px rgba(0,0,0,0.6);
}

.qr-code {
    height: 300px;
    width: 300px;
    border-radius: 20px;
    
}

h1, .text {
    width: 80%;
    margin: 0 auto;
    color: var(--dk-blue);
}

h1 {
    font-size: 22px;
    padding: 20px 0;
    font-weight: 700;
}

.text {
    font-weight: 400;
    padding-bottom: 20px;
}

.attribution { 
    font-size: 11px; 
    text-align: center; 
    vertical-align: text-bottom;
    position:absolute;                
    bottom:10px;   
}

.attribution a {
    color: hsl(228, 45%, 44%); 
}

@media (min-width: 500px) {
    .card {
        width: 340px;
    }
}