.mailform-send-txt {
    font-size: 20px;
    text-align: center;
    font-weight: bold;
}

.mailform-send-back {
    width: 200px;
    text-align: center;
    border: solid 1px #003caa;
    background: #003caa;
    border-radius: 10px;
    color: #fff;
    height: 50px;
    text-align: center;
    transition: 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 20px auto;
}

.mailform-send-back:hover {
    /*background: #fff;*/
    border-radius: 10px;
    /*color: #003caa;*/
    opacity: 0.7;
}

.error-txt {
    width: 100%;
    color: #ff0000;
    margin: 0 0 5px;
}

.mailform-box {
    display: block;
    margin: 30px auto;
    max-width: 100%;
    padding: 0 10px;
    box-sizing: border-box;
    width: 800px;
}

.mailform-content {
    display: flex;
    margin-bottom: 20px;
    flex-wrap: wrap;
    align-items: center;
    font-size: 18px;
    border-bottom: solid 1px #aaa;
    padding-bottom: 20px;
}

.mailform-content label {
    width: 200px;
    font-size: 18px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-right: 20px;
}

.mailform-content label span {
    margin: 0 5px;
    padding: 5px;
    display: flex;
    font-size: 14px;
    justify-content: center;
    align-items: center;
    color: #fff;
    background: #ff0000;
    border-radius: 5px;
    width: 40px;
}

.mailform-content input,
.confirm-txt {
    padding: 10px;
    font-size: 18px;
    border-radius: 5px;
    border: solid 1px #999;
    width: calc(100% - 220px)
}

.mailform-content textarea {
    width: 100%;
    padding: 10px;
    font-size: 18px;
    border-radius: 5px;
    border: solid 1px #999;
    margin: 5px 0;
}

.mailform-submit {
    width: 100%;
    padding: 10px;
    display: flex;
    justify-content: center;
    gap: 20px;
}

.mailform-submit input {
    width: 200px;
    text-align: center;
    border: solid 1px #003caa;
    background: #003caa;
    border-radius: 5px;
    color: #fff;
    height: 50px;
    font-size: 18px;
    font-weight: 600;
    line-height: 0;
    text-align: center;
    transition: 0.2s;
    cursor: pointer;
}

.mailform-submit02 input {
    width: 140px;
    margin: 0 5px;
}

.mailform-submit input:hover {
    /*background: #fff;*/
    border-radius: 5px;
    /*color: #003caa;*/
    opacity: 0.7;
}

.mailform-content-message {
    margin: 5px 0;
    width: 100%;
    padding: 10px;
    border-radius: 5px;
}

.mailform-box-ttl-ttl {
    margin: 0 auto 50px;
    text-align: center;
    font-size: 22px;
}

@media only screen and (max-width: 768px) {
    .mailform-content {
        font-size: 18px;
    }

    .mailform-content label {
        width: 100%;
        font-size: 16px;
        margin-bottom: 5px;
        margin-right: 0;
    }

    .mailform-content label span {
        margin: 0 5px;
        font-size: 12px;
        width: 40px;
    }

    .mailform-content input,
    .confirm-txt {
        font-size: 16px;
        width: 100%;
    }

    .mailform-content textarea {
        font-size: 16px;
    }
}