style.css

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

html{
    font-family:'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif
}

body {
    background-image: url(./Assets/blurry-gradient-haikei.svg);
    background-size: cover;
    background-attachment: fixed;
  }

.container{
    display: grid;
    place-items: center;
    height: 100vh;
}

.box{
    padding: 20px;
    width: 400px;
    background-color: white;
}

.upper{
    display: flex;
    flex-direction: column;
    align-items: center;
}

form {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    margin-top: 20px;
}
.upper h1{
    font-size: 32px;
}

form input{
    width: 100%;
    height: 40px;
    padding: 15px;
}

form button {
    width: 100%;
    height: 40px;
    background-color: rgb(255, 68, 0);
    border: none;
    color: white;
    font-weight: bold;
    opacity: 0.9;
}

form button:hover{
    opacity: 1;
}

.qr_container{
    border: 1px solid black;
    display: flex;
    justify-content: center;
    height: 0;
    opacity: 0;
    transition: opacity 0.3s ease-in, height 0.1s ease;
}
.qr_container.show{ 
    display: flex;
    padding: 10px;
    height: 180px;
    opacity: 1;
    transition: opacity 0.3s ease-in, height 0.1s ease;
}

.qr_container img{
    height: 150px;
}


@media(max-width: 500px){
    .box{
        width: 95%;
    }
    .box h1{
        font-size: 24px;
    }
    .upper p{
        font-size: 14px;
    }
}