* {
    margin: 0;
}

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;

    min-height: 30px;
    border-bottom: 1px solid black;
    padding: 20px;
    background-color: white;
    z-index: 1000;
}

.header {
    max-width: 1500px;
    margin: 0 auto;
}

main {
    max-width: 750px;
    margin: 120px auto 0;
    padding-top: 30px;
    padding-bottom: 50px;
    padding-left: 20px;
    border: 1px solid black;
    box-shadow: 0 0 20px 1px lightgrey;
}

.form {
    padding-left: 40px;
}

.textbox {
    padding: 10px;
    flex-direction: row;
}

a {
    text-decoration: none;
    color: black;
}

.error {
    margin-top: 10px;
    font-weight: bold;
}