*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: "Helvetica Neue",Helvetica,Arial;
}

body {
    width: 100%;
    height: 100vh;
    background-color: #FF5E35;
    display:flex;
    align-items: center;
    justify-content: center;
}

.container {
    background-color: #fff;
    width:700px;
    height:250px;
    border-radius:7px;
    padding:20px;
    transition: 0.1s;
}

.header h1 {
    font-weight: 500;
    margin-bottom: 5px;
}

.header p {
    font-size: 16px;
    margin-bottom: 10px;
}

input, button {
    width: 100%;
    height: 50px;
    outline: none;
    border-radius: 10px;

}

button {
    border: none;
    background-color: #000;
    font-size: 15px;
    color:#fff;
    cursor: pointer;
}

button:disabled,
button[disabled]{
    background-color: #666666;
    color:#8d8d8d;
}

input {
    border: 1px solid #8b8a8a;
    padding-left:10px;
    margin-bottom: 15px;
    font-size: 15px;
}

.qr-code {
    padding: 25px 0;
    border: 1px solid #ccc;
    margin-top: 10px;
    display:flex;
    align-items: center;
    justify-content: center;
    border-radius: 7px;
    opacity: 0;
    pointer-events: none;
    transition: 0.5s;
}

.qr-download {
    padding: 25px 0;
    border: 0px;
    margin-top: 10px;
    display:flex;
    align-items: center;
    justify-content: center;
    border-radius: 7px;
    opacity: 0;
    pointer-events: none;
    transition: 0.5s;
}



.container.active {
    height: 730px;
}

.container.active .qr-code, .container.active .qr-download {
    opacity: 1;
    pointer-events: auto;
}