#content_middle{
    margin:0 auto;
    width:900px;
    margin-top:60px;
    margin-bottom:60px;
}
.colunas{
    float:left;
    width:275px;
    height:200px;
    display:table;
}
.margem{
    margin-left:37px;
    margin-right:37px;
}

.colunas a img{
    width:275px;
    height:140px;
    border-radius:10px;
}

.colunas a h4{
    width:100%;
    display:table;
    margin-top:15px;
    margin-bottom:10px;
    font:bold italic 20px 'Roboto','Arial',sans-serif;
    color:#0b3b5c;
}
.colunas a p{
    font:normal 13px 'Roboto','Arial',sans-serif;
    color:#646464;
    line-height:21px;
}