@charset "UTF-8";
body {
    min-height: 100vh;
}

header {
    width: 100%;
    height: 38vw;
    max-height: 360px;
    background-image: url(../img/header.jpg);
    background-position: center center;
    background-size: auto 100%;
    background-repeat: no-repeat;
    background-color: white;
}

header h1 {
    font-size: 0;
}

footer {
    text-align: center;
    color: whitesmoke;
    background-color: #63D0ED;
    padding: 10px;
}

.logo-image img {
    width: 128px;
}

.enquete {
    margin-top: 2em;
    margin-bottom: 2em;
}

:required {
    border-width: 2px;
    border-color: gray;
}

.help-text {
    font-size: smaller;
}

:required+.help-text::before {
    content: "*必須です";
}