.zt_box li{ width:287px; float:left; margin-right:15px;margin-bottom: 20px; +height: 252px; +width:370px; }
.zt_box li:nth-child(3n){ margin-right:0;}
.zt_box li img{ width:100%;height:auto;border: 1px solid #ccc;}
.zt_box li h6{line-height: 32px;font-size: 16px; margin:5px 0}
.zt_box li h6 a,.details{color: #2076bd ;}
.zt_box li h6:hover,.details{ font-weight:700; }
.zt_box li p{line-height: 26px;}




@media only screen and (max-width:768px){
.zt_box li { width: 49%; margin-right: 2%;}
.zt_box li:nth-child(2n){ margin-right:0;}
.zt_box li:nth-child(3n){ margin-right:2%;}
}


@media only screen and (max-width:435px){

.zt_box li { width:100%; margin: 0; margin-bottom: 20px;}

}


@media only screen and (max-width:400px){

}