@media (max-width: 800px){

    .main-text h1{
        font-size: 50px;
    }
    
    .main-button h2{
        font-size: 20px;
    }

    .main-container{
        background: #fff url(../img/bg/bg3.jpg) no-repeat center top;
        background-size: cover;
    }

}