@media screen and (min-width: 640px){
				.post-prev, .post-next {
				    color: #fff;
				    background-color: #403f42;
				    z-index: 9999;
				    position: fixed;
				    top: 50%;
				    width: 35px;
				    height: 35px;
				    border: 0;
				    box-shadow: none;
				    opacity: 0.8;
				    margin: -25px 0 0;
				    font-size: 35px;
				    font-weight: 400;
				    text-align: center;
				    line-height: 28px;
				    cursor: pointer;
				}
				.post-prev{
					left:0;
				}
				.post-next{
					right:0;
				}
				.post-prev:hover, .post-next:hover {opacity: 1;}
			}
			@media screen and (max-width: 640px){
				.post-prev, .post-next {
				    position: fixed;
				    top: 50%;
				    opacity: 0.8;
				    color: #382c2c;
				    background: none;
				    width: 25px;
				    height: 25px;
				    line-height: 62%;
				    border-radius: 0%;
				    font-size: 30px;
				    text-align: center;
				    z-index: 9999;
				    cursor: pointer;
				}
				.post-prev{
					left:0;
				}
				.post-next{
					right:0;
				}
				.post-prev:hover, .post-next:hover {opacity: 1;}
			}