body {
    font-family: Arial, sans-serif;
    background: #f5f5f5;
}

form {
    width: 320px;
    /* margin: 50px auto; */
    background: #fff;
    padding: 20px;
    border-radius: 10px;
    border: 1px solid;
}

input, button {
    width: 100%;
    margin-bottom: 10px;
    padding: 15px;
    box-sizing: border-box;
    border-radius: 10px;
    border: 0px;
    background: #f5f5f5;
}

button {
    background: #1e88e5;
    color: #fff;
    border: none;
    cursor: pointer;
}

main{
    position: relative;
    border-radius: 10px;
    border: 1px solid;
    padding: 10px 20px;
    margin: 10px;
    background: #303030;
    color: white;
}

a{
    color: white;
    background: royalblue;
    padding: 10px;
    border-radius: 10px;
    text-decoration: none;
}

.error {
    background: #ffdddd;
    color: #900;
    padding: 10px;
    margin-bottom: 10px;
}