@media (max-width: 756px) {
    #main_cms ._ae_desc h1 {
        text-align: center;     
        font-size: 20px!important;       
        color: #1a1a1a;       
        line-height: 1.2;       
        margin-bottom: 15px;   
        font-weight: 700;      
    }
}