PART 10 PSD to HTML Media Queries Responsive [HTML/ CSS] [Code Fusion]

The Source Code of the video is bellow
 

/* MEDIA QUERIES */

@media only screen and (max-width: 1190px) {
    .col-4-port {
        width: 33.33%;
    }

}

@media only screen and (max-width: 910px) {
    .navbar {
        overflow: hidden;
        position: absolute;
        right: 30px;
        top: 70px;
        display: block;
        z-index: 33;
    }

    .burger-nav {
        background-image: url(../img/hamburger.png);
        height: 33px;
        background-repeat: no-repeat;
        width: 100%;
        text-align: center;
        display: block;
        float: right;
        width: 40px;
        cursor: pointer;
        margin-bottom: 14px;
    }
    .container nav ul{
        height: 0;
        overflow: hidden;
    }
    .container nav ul.open{
        height: auto;
        clear: both;
    }
    .container nav ul li{
        display: block;
        font: none;
        text-align: right;
        width: auto;
        margin: 0;
    }
    
    .container nav ul li a{
        display: block;
        background-color: #fff;
        color: #503392;
        padding: 10px 20px;
        margin: 0;
        z-index: 10;
    }
    .container nav ul li a:hover{
        border: none;
    }
    .feature-headding{
        width: 100%;
        float: none;
    }
    .feature-headding h2{
        font-size: 100px;
        text-align: center;
    }
    .do{
        display: inline;
    }
    .feature-detail{
        float: none;
        width: 90%;
        margin-top: 15px;
    }
    .li-feature h3{
        margin-bottom: 10px;
    }
    #services{
        background-image: none;
    }
    .service {
        width: 80%;
    }
   
.col-4-port,.col-4-stats{
    width: 50%;
    text-align: center;
}
.col-4-stats{
    margin-top: 0;
}
form{
    float: none;
    text-align: center;
    width: 100%;
}
.add{
    float: none;
}
.form-input{
    width: 80%;
    margin-left: auto;
    margin-right: auto;
}
.btn-send{
    width: 100%;
}
.address{
    float: none;
    
}
}
@media only screen and (max-width: 630px) {
    .ul-portfolio li a{
        margin: 10px 10px;
    }
    .col-4-port,.col-4-stats{
        width: 100%;
        text-align: center;
    }
    .col-4-stats{
        margin-top: 0;
    }
    .copy{
        margin-bottom: 20px;
        float: none;
        text-align: center;
        width: 90%;
    }
    .copy p{
        float: none;
    }
    .social-links{
        float: none;
        width: 100%;
        text-align: center;
    }
}