* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.gallery {
    padding: 20px;
}

.gallery ul {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 15px;
}

.gallery ul li {
    list-style: none;
    font-size: 20px;
    font-family: "Roboto", serif;
    background-color: rgb(215, 215, 215);
    margin: 5px;
    padding: 8px 20px;
    cursor: pointer;
    letter-spacing: 1px;
    transition: 0.4s linear;
}

.gallery ul li:hover {
    background-color: #00ade7;
    color: #fff;
}

.gallery ul li.active {
    background-color: #00ade7;
    color: white;
}

.items-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;

}

.items {
    position: relative;
    width: 30%;
    height:300px ;
  
    margin: 0.8rem;
}

@media(max-width:767px){
    .items {
        position: relative;
        width: 100%;
        height:300px ;
      
        margin: 0.8rem;
    }  
}

.items img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}