style.css

@import url('https://fonts.googleapis.com/css2?family=Dosis:wght@300&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Asap+Condensed&display=swap');

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

body{
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(-45deg, #ee7752, #e73c7e, #23a6d5, #23d5ab);
    background-size: 400% 400%;
    animation: gradient 15s ease infinite;
    height: 100vh;
}
@keyframes gradient {
    0% {
        background-position: 0 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0 50%;
    }
}

.wrapper{
    height: 260px;
    background: white;
    max-width: 410px;
    border-radius: 7px;
    padding: 16px 25px;
    transition: height 0.2s ease;

}

.wrapper.active{
    height: 530px;
}

header h1{
    font-size: 21px;
    font-weight: 500;
}

header p{
    margin-top: 5px;
    color: #474747;
    font-size: 16px;
}

.wrapper .form{
    margin: 20px 0 30px;
}

.form :where(input, button){
    width: 100%;
    height: 55px;
    border: none;
    outline: none;
    border-radius: 5px;
}

.form input{
    font-size: 18px;
    padding: 0 17px;
    border: 1px solid #999;
}

.form button {
    color: #fff;
    text-transform: uppercase;
    text-align: center;
    line-height: 1;
    font-size: 20px;
    box-shadow: 0 4px 6px rgba(50, 50, 93, 0.11), 0 1px 3px rgba(0, 0, 0, 0.08);
    background-image: linear-gradient(to right, #895cf2 0%, #ffabf4 50%, #895cf2 100%);
    transition: 0.5s;
    padding: 10px;
    outline: none;
    border-radius: 25px;
    margin-top: 20px;
    font-family: Asap Condensed, serif;
    cursor: pointer;
    background-size: 300% 300%;
}
.form button:hover {
    background-position: right center;
}

.wrapper .qr-code{
    display: flex;
    opacity: 0;
    pointer-events: none;
    padding: 33px 0;
    align-items: center;
    justify-content: center;
    border: 1px solid #ccc;
}

.wrapper.active .qr-code{
    opacity: 1;
    pointer-events: auto;
    transition: opacity 0.5s 0.05s ease;
}

.github{
    position:absolute; top:0; left: 20px;
    width: 300px;
    height: 50px;
}
.footer {
    position: fixed;
    left: 0;
    bottom: 0;
    width: 100%;
    background-color: white;
    color: black;
    text-align: center;
}