.list_btn a{
display: block;
position: relative;
width: 336px;
background-color: #fff;
border: solid 2px #646464;
color: #646464;
font-size: 16px;
text-align: center;
text-decoration: none;
margin: 2% auto 0;
padding: 1.7% 0%;
}
.list_btn .arrR{
position: absolute;
top: 50%;
right: 20px;
width: 0;
height: 0;
border-style: solid;
border-width: 8px 0 8px 10px;
border-color: transparent transparent transparent #646464;
transform: translateY(-50%);
}
.list_btn a:hover,
div#tab .btn a:hover{
opacity: 0.6;
filter: alpha(opacity=60);
-ms-filter: "alpha( opacity=60 )";
transition: 0.3s ;
}
.notice{
background-color: #E3E3E3;
margin: 20px 0 50px 0;
padding: 1px 64px 30px;
}
.irtit{
font-size:24px;
font-weight:bold;
color:#333;
text-align:center;
line-height:1.3;
padding-top:25px;
}

@media screen and (max-width:736px){
.list_btn a{
display: block;
position: relative;
width: 220px;
background-color: #fff;
border: solid 1.4px #646464;
color: #646464;
font-size: 16px;
text-align: center;
line-height:1.3;
margin: 5% auto 0;
padding: 1.9%;
	}
.list_btn .arrR{
position: absolute;
top: 50%;
right: 15px;
width: 0;
height: 0;
border-style: solid;
border-width: 6px 0 6px 8px;
border-color: transparent transparent transparent #646464;
transform: translateY(-50%);
	}
.notice{
background-color: #E3E3E3;
margin: 3% 0 5% 0;
padding: 10px 16px 16px;
}
.irtit{
font-size:18px;
font-weight:bold;
color:#333;
text-align:center;
line-height:1.3;
padding-top:10px;
}
}