.skil-wrap {
    overflow: hidden;
    position: relative;
}
.skil-wrap > div {
    width: 23%;
    display: inline-block;
    float: left;
    margin-right: 2.6%;
    text-indent: 0;
    line-height: 0;
}
.skil-wrap > div:last-child {
    margin-right: 0;
}
.skil-wrap > div > img {
    width: 100%;
}

@media screen and (max-width: 1000px){
    .skil-wrap > div {
        width: 48%;
        margin-right: 4%;
    }
    .skil-wrap > div:nth-of-type(1) {
        margin-bottom: 20px;
    }
    .skil-wrap > div:nth-of-type(2) {
        margin-right: 0;
        margin-bottom: 20px;
    }
    
}