* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    overflow-x: hidden;
}

body {
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    background-color: #f0f0f0;
    display: flex;
    flex-direction: column;
}

a {
    color: #f0f0f0;
    text-decoration: none;
}

header {
    background-color: #7c0a9e;
    color: #f0f0f0;
    width: 100%;
    padding: 3rem;
    text-align: center;
}

main {
    flex: 1;
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 1rem;
}

#qrcode img, #download {
    margin: 1rem auto;
}

#qrcode {
    color: red;
    text-align: center;
    padding: 0.5rem;
}

#url {
    width: 100%;
    height: 1.5rem;
    margin: 1rem 0;
    display: block;
    padding: 0.3rem;
    border-radius: 25px;
}

button {
    margin: 1rem 0;
    padding: 0.5rem;
    width: 10rem;
    border-radius: 50px;
    transition: ease 0.5s;
}

.btn-info {
    color: #f0f0f0;
    background-color: #7c0a9e;
    border: 2px solid #3d084d;
}

.btn-info:hover {
    color: #3d084d;
    background-color: #f0f0f0;
    border: 2px solid #7c0a9e;
}

.btn-limpa {
    color: #f0f0f0;
    background-color: #9d1414;
    border: 2px solid #5a0a0a;
}

.btn-limpa:hover {
    color: #f0f0f0;
    background-color: #5a0a0a;
    border: 2px solid #9d1414;
}

footer {
    width: 100%;
    padding: 1rem;
    background-color: #7c0a9e;
    display: flex;
    justify-content: center;
    align-items: center;
}

footer i {
    font-size: 2rem;
    margin: 0.5rem;
    transition: ease 0.5s;
}

footer a {
    border-radius: 50px;
}

footer a:hover {
    background-color: #f0f0f0;
    color: #7c0a9e;
}