.btn{ width:100%; display:none;} 
 .btn span{ display:inline-block; width:49%;_width:48%; border:1px solid #ccc; text-align:center; line-height:30px; height:30px; background:#b29d72; box-sizing:border-box;}
 .btn span a{ color:#fff; display:block; width:100%; transition: all 0.2s ease 0s;-moz-transition: all 0.2s ease 0s;-webkit-transition: all 0.2s ease 0s;-o-transition: all 0.2s ease 0s;}
 .btn span a:hover{ background:#81662e;}

.ewm_box .ewm{width: 50%;}
.ewm_box img{float: left;margin-right: 20px;}
.ewm_box h2{font-size: 18px;line-height: 30px;margin-bottom: 10px;}
.ewm_box p{line-height: 28px;color: #666;}

@media only screen and (max-width:768px){
 .btn{ display:block; } 
}
@media only screen and (max-width:640px){
.ewm_box .ewm{width: 100%;margin-bottom: 10px;}
}