html, body{
    margin: 0;
    box-sizing: border-box;
    width: 100%;
    height: 100%;
}

/* CSS variables */
:root{
    --primary-color: #4458dc;
    --primary-color2: #854fee;
    --title-color: #141313;
    --text-color: #777777;
    --border-color: #201f1f17;
    --gradient-color: linear-gradient(90deg, #4458dc 0%, #854fee 100%);
    --shadow-color: 0px 10px 30px rgba(118, 85, 225, 0.3);
    --box-shadow: 0px 10px 30px rgba(57, 56, 61, 0.205);
    --web-color: #f03c02;

    /* font family variables */
    --roboto: 'Roboto', cursive;
}
/* font face */

@font-face{
    font-family: "Roboto";
    src: '../fonts/Roboto/Roboto-Regular.ttf';
}
/* global classes */

.title-text{
    font: normal bold 50px/72px var(--roboto);
}

.text-uppercase{
    text-transform: uppercase;
}

/* buttons */
.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: var(--gradient-color);
    background-clip: padding-box;
    color: whitesmoke;
    transition: background .5 s ease;
    box-shadow: var(--box-shadow);
}
.button.button.primary-button:hover{
    background: whitesmoke;
    background-clip: padding-box;
    color: black;
}
.button.primary-button::after, .button.secondary-button::after{
    content: "";
    position: absolute;
    top: -2px; left: -2px;
    bottom: -2px; right: -2px;
    background: var(--gradient-color);
    z-index: -1;
    border-radius: 4px;
}

.button.secondary-button{
    background: white;
    background-clip: padding-box;
    transition: background .5s ease;
}
.button.secondary-button:hover{
    background: var(--gradient-color);
    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);
}
.title-h2{
    font: normal bold 29px/30px 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;
}
/* project area */
.site-main .project-area{
    padding: 2rem 0;
}
.site-main .project-area .button-group button{
    background: transparent;
    border: none;
    font: normal 500 16px/130px var(--roboto);
    text-transform: uppercase;
}
.site-main .project-area .button-group button:hover{
    color: var(--web-color);
}
.site-main .project-area .button-group .active{
    color: var(--web-color) !important;
}
.site-main .project-area .button-group button + button{
    padding-left: 3rem;
}
.site-main .project-area .grid .our-project > .title h4{
    font: normal 700 25px/12px var(--roboto);
}
.site-main .project-area .grid .our-project .img a:hover img{
    filter: brightness(1.1) drop-shadow(1px 8px 30px #b1afaf);
}
/* end roject area */