.tbl_form {
    margin-top: 50px;
}
.tbl_form th,
.tbl_form td {
    padding: 15px;
}
.tbl_form th {
    width: 30%;
    text-align: left;
}
.tbl_form input {
    width: 50%;
    padding: 10px 10px 8px 10px;
    border: solid 1px #ccc1bc;
}
.tbl_form .list li {
    display: flex;
    clear: both;
    display: block;
    margin: 1px;
    padding: 5px;
    border-radius: 3px;
    border: dashed 1px #CCCCCC;
    width: auto;
    height: auto;
    text-indent: 5px;
}
.tbl_form .list li input {
    width: auto;
}
.tbl_form .list li:not(:last-child) {
    margin-bottom: 5px;
}
.tbl_form textarea {
    width: 100%;
    height: 150px;
    padding: 10px 10px 8px 10px;
}
.tbl_form select {
    padding: 5px 10px 3px 10px;
}
.tbl_form .fmust .fmust_ico {
    position: relative;
    top: 6px;
    float: right;
    width: 30px;
    height: 16px;
    overflow: hidden;
    margin: 0px 5px 0px 5px;
    background-image: url(../images/mfp_must.gif);
    text-indent: -50000px;
}
.submit {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    margin-top: 30px;
}
.submit input {
    width: 225px;
    height: 50px;
    margin: 0 20px 10px;
    background: url(../images/submit_button.jpg) no-repeat;
    background-size: 225px 50px;
    border-width: 0;
    border-style: none;
    font-size: 0;
    cursor: pointer;
    transition: all 0.5s;
}
.submit input.back {
    background: url(../images/back_button.jpg) no-repeat;
    background-size: 225px 50px;
}
.submit input.send {
    background: url(../images/send_button.jpg) no-repeat;
    background-size: 225px 50px;
}
.submit input:hover {
    opacity: 0.7;
}
.tbl_form .alert {
    display: block;
    width: 100%;
    margin-top: 5px;
    color: #FF0000;
    font-size: 14px;
    line-height: 1.5em;
}
.site_top a {
    display: block;
    cursor: pointer;
    width: 225px;
    height: 50px;
    transition: all 0.5s;
    border-width: 0;
    border-style: none;
    background: url(../images/top_button.jpg);
    background-size: 225px 50px;
    text-align: center;
    text-indent: -9999px;
    margin: 30px auto;
}
.site_top a:hover {
    opacity: 0.7;
}
.mail_success {
    padding: 30px;
    border: solid 2px #ccc1bc;
    text-align: center;
}
.mail_success p {
    font-size: 16px;
}
.txt_bold {
    font-weight: 700;
}
@media screen and (max-width: 750px) {
    .tbl_form th,
    .tbl_form td {
        display: block;
        width: 100%;
        padding: 12px;
        border-top: 0;
    }
    .tbl_form tr:first-child th {
        border-top: solid 1px #eee;
    }
    .tbl_form input,
    .tbl_form select {
        width: 100%;
    }
}