.submitButton {
    display: block;
    width: 50%;
    margin: 50px auto;
    padding: 15px 30px;
    font-size: 20px;
    border: none;
    border-radius: 5px;
    background-color: #d193fc;
    color: #fff;
    cursor: pointer;
    transition: 0.3s;
    appearance: none;
    -webkit-appearance: none;
}

.submitButton:hover {
    background-color: #fd8ac4;
}

.submitButton:disabled {
    pointer-events: none;
    background: #ccc;
}

.form-buttons .submitButton {
    width: 35%;
}

@media only screen and (max-width: 960px) {
    .form-buttons .submitButton {
        margin-bottom: 30px;
        width: 80%;
    }
}


/* 応募期間終了 */
.form-close {
    max-width: 960px;
    width: 100%;
    margin: 20px auto;
    padding: 30px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 15px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.form-close {
    margin-top: 50px;
}

@media only screen and (max-width: 960px) {
    .form-close {
        width: 90%;
    }
}

.mail-form-text-4 {
    text-align: center;
}

.mail-form-text-4 p {
    font-size: 1.2em;
}

@media only screen and (max-width: 768px) {
    .mail-form-text-4 p {
        font-size: 3.8vw;
    }
}


/* 追加class */
.flex {
    display: flex;
}

.contents-center {
    justify-content: center;
    align-items: center;
}

.flex-indent {
    flex-wrap: wrap;
}

.flex-indent > :first-child {
    flex-shrink: 0;
}

.flex-indent > :last-child {
    flex: 1;
}

.slidein {
    transition: .5s cubic-bezier(0, 1, 0, 1);
}

.upper-hidden {
    z-index: -1;
    margin-top: -100%;
}

.mt-2 {
    margin-top: 24px;
}

.mb-2 {
    margin-bottom: 24px;
}

.attention-header {
    font-size: 20px;
    margin-bottom: 12px;
}

.attention-frame {
    padding: 24px;
    border: solid darkgray 2px;
    border-radius: 12px;
    box-sizing: border-box;
}