*{
    box-sizing: border-box;
    margin: 0;
}
.container{
    max-width: 1140px;
    margin: auto;
}
.row{
    display: flex;
    flex-wrap: wrap;
}
 
.section-title{
    flex: 0 0 100%;
    max-width: 100%;
    margin-bottom: 40px;
}
.section-title h1{
    display: inline-block;
    font-size: 35px;
    text-transform: uppercase;
    font-weight: 700;
    color: #000000;
    margin: 0 0 5px;
    position: relative;
}
.text-center{
    text-align: center!important;
}
.text-right{
    text-align: right!important;
}
.portfolio{
    background-color: white;
    padding: 100px 7px;
}
.portfolio .section-title h1:before{
    left: 30%;
}
.portfolio .filter-buttons{
    flex: 0 0 100%;
    max-width: 100%;
    margin-bottom: 20px;
}
.portfolio .filter-buttons ul{
    list-style: none;
    text-align: center;
    padding: 0;
}
.portfolio .filter-buttons ul li{
    color: #000000;
    font-weight: 500;
    font-size: 16px;
    display: inline-block;
    margin: 0px 8px;
    text-transform: uppercase;
    cursor: pointer;
    padding-bottom: 0px;
}
.portfolio .filter-buttons ul li.active{
    color: #f07b04;
}
.portfolio .portfolio-gallery{
    flex: 0 0 100%;
    max-width: 100%;
    display: flex;
    flex-wrap: wrap;
}
.portfolio .portfolio-gallery .item{
    flex: 0 0 33.33%;
    max-width: 33.33%;
    position: relative;
    padding: 8px;
  
}
.portfolio .portfolio-gallery .item .inner{
    position: relative;
}
.portfolio .portfolio-gallery .item img{
    width: 100%;
    display: block;
}
 
@media(max-width:767px){
 
    .portfolio .portfolio-gallery .item{
        flex:0 0 50% ;
        max-width: 50%;
        position: relative;
        padding:8px ;
    }
 
}
@media(max-width:500px){
 
    .portfolio .portfolio-gallery .item{
        flex:0 0 100% ;
        max-width: 100%; }
}