.parts_main .memobox {
    position: relative;
    margin: 2em 0;
    padding: 1.2em 1em 1em;
    border: solid 3px #b53105;
    border-radius: 8px;
}
.parts_main .memobox .memo-title {
    position: absolute;
    display: inline-block;
    top: -13px;
    left: 10px;
    padding: 0 9px;
    line-height: 1;
    font-size: 19px;
    background: #FFF;
    color: #b53105;
    font-weight: bold;
}
.parts_main .memobox p {
    margin: 0; 
    padding: 0;
}

.parts_main .columnbox {
    margin: 2em auto;
    background: #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.22);
}
.parts_main .columnbox p{
	margin: 0;
	padding: 0;
}

.parts_main .columnbox .column-title {
    background: #257a74;
    padding: 8px;
    text-align: center;
    color: #FFF;
    font-weight: bold;
    letter-spacing: 0.05em;
    font-size: 18px;
}
.parts_main .columnbox .column-title::before{
	font-family: "Font Awesome 5 Free";
	content: "\f518";
	margin-right: 8px;
	font-weight: 900;
}
.parts_main .columnbox .column-sub{
    border: 1px solid #939393;
	border-top: none;
	display: flex;
	flex-wrap: wrap;
	padding: 20px;
	justify-content: space-around;
}
.parts_main .columnbox .column-sub .sub_photo{
	width: 30%;
	height: 240px;
}
.parts_main .columnbox .column-sub .sub_photo img{
	width: 100%;
	height: 100%;
	object-fit: cover;
}
.parts_main .sub_cts{
	width: 64%;
}
.parts_main .sub_cts .title{
	font-weight: bold;
	font-size: 18px;
	margin-bottom: 10px;
}
.parts_main .column_button {
  	max-width: 300px;
  	margin: 5% 0 0 auto;
}
.parts_main .column_button a.btn_more {
  	display: flex;
  	justify-content: center;
  	align-items: center;
  	width: 100%;
  	height: 50px;
  	position: relative;
  	background: #257a74;
  	border-radius: 30px;
  	box-sizing: border-box;
  	padding: 0 45px 0 25px;
  	color: #fff;
  	font-size: 16px;
  	line-height: 1.3;
  	text-align: left;
  	text-decoration: none;
  	transition-duration: 0.3s;
}
.parts_main .column_button a.btn_more:before {
  	content: '';
  	width: 8px;
  	height: 8px;
  	border: 0;
  	border-top: 2px solid #fff;
  	border-right: 2px solid #fff;
  	transform: rotate(45deg);
  	position: absolute;
  	top: 50%;
  	right: 25px;
  	margin-top: -5px;
}
.parts_main .column_button a.btn_more:hover{
	transition: 0.3s;
	opacity: 0.7;
}

@media screen and (max-width: 767px){
.parts_main .columnbox .column-title {
    font-size: 16px;
}
.parts_main .columnbox .column-sub{
	display: block;
	flex-wrap:nowrap;
	justify-content: unset;
}
.parts_main .columnbox .column-sub .sub_photo{
	width: 100%;
	height: 240px;
	margin-bottom: 14px;
}
.parts_main .sub_cts{
	width: 100%;
}
.parts_main .sub_cts .title{
	font-size: 16px;
}
.parts_main .column_button {
  	margin: 8% auto 3%;
}

}