responsive-bootstrap.css

/* if the viewport is equal to 340px or less than that */ 
@media only screen and (max-width: 340px){
    .header_area .main-menu .navbar,
    .header_area .main-menu .navbar .navbar-brand,
    .site-main .subscribe-us-area .subscribe .subscribe-title,
    .site-main .subscribe-us-area .subscribe .subscribe-title p, h4,
    .site-main .services-area,
    .site-main .subscribe-us-area .subscribe
    {
        padding: 2%;
        margin: 0%;
    }

    .site-main .site-banner .site-title h1{
        font-size: 41px;
    }

    .site-main .subscribe-us-area .subscribe form .input-textbox input{
        width: 15rem    !important;
    }

    .site-main > .services-area .services{
        width: 13rem;
    }

}


/* if the viewport is equal to 340px or less than that */ 
@media only screen and (max-width: 792px){
    .site-main .about-area .about-title h2 > span{
        font-size: 31px;
        letter-spacing: 10px;
    }

    .site-main .brand-area .experience-area .years-area{
        padding-left: 1%;
        width: 49%;
    }

    .site-main .brand-area .experience-area .bg-panel{
        margin-left: 30%;
        width: 80%;   
    }

    .site-main .brand-area .experience-area .call-area{
        padding-left: 3%;
    }

    .site-main .project-area .button-group button{
        font: normal 500 18px/40px var(--roboto);
    }

    .site-main .about-area .about-title p{
        padding: 0%;
    }

    .site-main .subscribe-us-area .subscribe form .input-textbox input{
        width: 20rem;
        margin: 5%;
    }
}



/* if the viewport is equal to 1910px or less than that */ 
@media only screen and (max-width: 1910px){
    .header_area .main-menu .navbar{
        padding: 1rem;
    }

    .container{
        max-width: 90%;
    }

    .site-main .brand-area,
    .site-main .services-area .services-title,
    .site-main .about-area{
        padding: 3% 4%;
    }


}
.button{
    padding: .8rem 2.2rem;
    font: normal 500 16px/20px var(--roboto);
    position: relative;
    border: 3px solid transparent;
    border-radius: 4px;
}

.button.primary-button{
    background-image: linear-gradient(45deg, #2196f3, #3043ff);;
    background-clip: padding-box;
    color: white;
    transition: background .6s ease;
    box-shadow: var(--box-shadow);
}

.button.primary-button:hover{
    background: whitesmoke;
    background-clip: padding-box;
    color: #000;
}

.button.primary-button::after, .button.secondary-button::after{
    position: absolute;
    top: -2px; left: -2px;
    bottom: -2px;  right: -2px;
    background-image: linear-gradient(45deg, #2196f3, #3043ff);;
    content: ' ';
    z-index: -1;
    border-radius: 4px;
}

.button.secondary-button{
    background: white;
    background-clip: padding-box;
    transition: background .6s ease;
}

.button.secondary-button:hover{
    background-image: linear-gradient(45deg, #2196f3, #3043ff);;
    color: whitesmoke;
    box-shadow: var(--box-shadow);
}

p.para{
    color: var(--text-color);
    font: normal 500 16px/ 25px var(--roboto);
}

.font-roboto{
    font-family: var(--roboto);
}

button:focus,
button:active
button:hover
.btn:active,
.btn.active{
    outline: 0px !important;
    box-shadow: none !important;
}

.title-h1{
    font: normal bold 39px/ 40px var(--roboto);
}


.navbar_fixed{
    position: fixed;
    width: 100%;
    top: -1px;
    left: 0; right: 0;
    background: #ffffff;
    box-shadow: var(--box-shadow);
    z-index: 999;
    transition: background 1s ease;
}