.required{position: relative;}
.required:after{
	position: absolute;
	content:"(必須)";
	color: red;
	font-size: .8em;
	right: 1em;
}
.btn_submit{	
    background: #fff;
    border: 3px solid rgba(11,23,97,1);
    padding: .25em 2em;
    border-radius: 3em;
}
.btn_back{
    font-size: 1.25em;
    font-weight: bold;
    padding: 0 1em;
    line-height: 2em;
    color: rgb(14,141,191);
    border-bottom: 1px solid rgb(14,141,191);
}
#contact_form{
    padding: 0 9px;
    margin: .5em 0 30px;
}
#contact_form_wrap{
    border: 3px solid rgb(19,141,191);
}
.contact_form_title {
    padding: .5em 1em;
    background: rgb(19,141,191);
    font-size: 1.5em;
    color: white;
    font-weight: bold;
    margin: 10px auto;
}
.contact_item_row {
    display: flex;
    align-items: stretch;
    margin-bottom: 10px;
}
.contact_item_row > div:first-child{
    margin-right: 2%;
    padding: .75em;
    font-size: 1.25em;
    font-weight: bold;
    vertical-align: middle;
    background-image: linear-gradient(-45deg,#fff 25%,#E6E6E6 25%, #E6E6E6 50%,#fff 50%, #fff 75%,#E6E6E6 75%, #E6E6E6);
    background-size: 8px 8px;
}
.contact_item_row > div:last-child{
}





@media screen and (max-width: 768px){
    .contact_item_row {align-items: center;flex-wrap:wrap;margin-bottom: 1.5em;}
    .contact_item_row > div:first-child {
        width: 100%;
        padding: .25em .75em;
        font-size: 1.0em;
        margin-right: 0;
    }
    .contact_item_row > div:last-child{width: 100%;padding: 0!important}
    .text-center.font_16{font-size: 14px;text-align: left!important;}
    .btn_submit{padding: 10px 40px;font-size: 18px;}
    .btn_back{margin: 1rem 2rem;display: inline-block;}
}