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

.main {
    background: #12c2e9;
    background: -webkit-linear-gradient(to right, #f64f59, #c471ed, #12c2e9);
    background: linear-gradient(to right, #f64f59, #c471ed, #12c2e9);
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
}

.container {
    width: 400px;
    padding: 25px 35px;
    background: #fff;
    border-radius: 10px;
}

.container h1 {
    margin-bottom: 8px;
}

.container p {
    font-weight: 600;
    font-size: 15px;
    margin-bottom: 8px;
}

.container input {
    width: 100%;
    height: 50px;
    border: 1px solid #00aaff;
    outline: 0;
    padding: 10px;
    margin: 10px 0 20px;
    border-radius: 5px;
}

.container button {
    width: 100%;
    height: 50px;
    background: #00aaff;
    color: #fff;
    border: 0;
    outline: 0;
    border-radius: 5px;
    box-shadow: 0 10px 10px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    margin: 20px 0;
    font-weight: 600;
}

#imgBox {
    width: 200px;
    border-radius: 5px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 1s;
}

#imgBox img {
    width: 100%;
    padding: 10px;
}

#imgBox.show-img {
    max-height: 300px;
    margin: 10px auto;
    border: 1px solid #d1d1d1;
}

.error {
    animation: shake 0.1s linear 10;
}

@keyframes shake {
    0% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-2px);
    }

    50% {
        transform: translateX(0);
    }

    75% {
        transform: translateX(2px);
    }

    100% {
        transform: translateX(0);
    }
}