.leia_mais{
    float: right; 
    margin-top: -40px; 
    font-size: 16px; 
    margin-right:15px;
}
.leia_mais:hover {
    color: #000;
    border-bottom: 1px solid #000;
}


@media all and (min-width:900px) and (max-width:999px) {
    .leia_mais {
        float: right;
        margin-top: -70px;
        font-size: 14px !important;
        margin-right: 2px;
    }
}