@media only screen and (max-width:1024px){
    .mobile-menu span{
        display: block;
    }
    .row{
        margin: 0.15rem;
    }
    .hero-text-box{
        width: 90%;
    
        
     }
    .main-nav
    {
        display: none;
    }
    html
    {
        font-size: 55.5%;
    }
    .client_photo
    {
        width: 100%;
        float: none;
        text-align: center;
    }
    .client_review
    {
        width: 100%;
        float: none;
        text-align: center;
    }
    .contact
    {
        width: 100%;
        margin-left: 0;
    }
}
 @media only screen and (max-width:980px){
     .span_1_of_4{
         width: 49.2%;
     }
     .span_1_of_4:nth-child(3){
         margin-left: 0;
     }
     html{
         font-size: 62.5%;
     }
 }
 @media only screen and (max-width:780px){
     header{
         height: 55vh;
     }
   h1{
       font-size: 3.5rem;
   }
   h2{
    font-size: 3rem;
    }
  h3{
    font-size: 2rem;
    }
    .span_1_of_2:nth-child(2){
        margin-left: 0;
    }
    html{
        font-size: 55%;
    }
  
}
@media only screen and (max-width:480px){
    header{
        height: 65vh;
    }
    
    .span_1_of_4{
        width: 92%;
    }
 
    .portfolio-filter{
        margin: 1rem;
    }
    html{
        font-size: 50%;
    }
    .testimonial .col:nth-child(3),
.testimonial .col:nth-child(4) {
    margin-top: 4rem;
}
header{
    background-position: center;
}
.hero-text-box{
    margin-block-end: unset;
    position: absolute;;
    text-align: center;
    
    

}
}