*{
    padding: 0;
    margin: 0;
}
:root {
    --primary:#208dcc;
    --button:#14558a;
}
html{
    font-family: monospace;
}
body{
    background-color: var(--primary);
}
.container{
     display: grid;
     place-items: center;
     height: 100vh;
}
.box{
    padding: 20px;
    width: 400px;
    background-color: white;
}
.upper h1{
    font-size: 32px;
    font-weight: bold;
    line-height: 42px;
}
.upper,form{
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
form{
     margin-top: 20px;
     gap: 20px;
}
form input{
    width: 100%;
    padding: 10px 5px;
}
form button{
    width: 100%;
    height: 40px;
    padding: 10px 5px;
    background-color: #fff;
    color: #000;
    opacity: 0.9;
    transition: 0.3s ease-in;
    
}
form button:hover{
    background-color: var(--primary);
    color: #000;
    transition: 0.3s ease-in;
    /* border:2px solid black; */
   
}
.qr-container{
    border:1px solid var(--primary);
    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: 150px;
    opacity: 1;
    transition: opacity 0.3s ease-in,height 0.1s ease;
}
.qr-container img{
    height: 150px;
}