.header {
    margin-bottom: 4vw;
}

    .services-arrow {
        margin-bottom: 2vw;
    }

    .arrow-list {
        margin: 0;
        min-height: 28vw;
    }

        .arrow-list-item {
            margin-bottom: 1vw;
            font-size: 1.3vw;
        }
    
    .arrow-image {
        margin: 0 auto;
        width: 95%;
        height: 9vw;
        background-repeat: no-repeat;
        background-size: contain;
    }

        .engineering-service {
            background-image: url(../img/services/engineering.png);
        }

        .mounting-service {
            background-image: url(../img/services/mounting.png);
        }

        .production-service {
            background-image: url(../img/services/production.png);
        }

        .qualification-service {
            background-image: url(../img/services/qualification.png);
        }

.welding-quality,
.standarts {
    overflow: hidden;
    width: 48%;
    float: left;
    margin-bottom: 4vw;
}

.standarts {
    float: right !important;
}

    .welding-quality-list,
    .standarts-list {
        margin: 0;
        padding: 0;
    }

        .welding-quality-list-item,
        .standarts-list-item {
            padding-left: 3.5vw;
            padding-bottom: 1.5vw;
            font-size: 1.5vw;
            background-repeat: no-repeat;
            background-size: 1.4vw;
        }

            .w1 {
                background-image: url(../img/services/w1.png);
            }

            .w2 {
                background-image: url(../img/services/w2.png);
            }

            .w3 {
                background-image: url(../img/services/w3.png);
            }

            .w4 {
                background-image: url(../img/services/w4.png);
            }

            .w5 {
                background-image: url(../img/services/w5.png);
            }

            .w6 {
                background-image: url(../img/services/w6.png);
            }

            .q1 {
                background-image: url(../img/services/q1.png);
            }

            .q2 {
                background-image: url(../img/services/q2.png);
            }

            .q3 {
                background-image: url(../img/services/q3.png);
            }

            .q4 {
                background-image: url(../img/services/q4.png);
            }

            .q5 {
                background-image: url(../img/services/q5.png);
            }

@media (max-width: 630px) {

    .services-list {
        columns: 1 !important;
    }

        .services-list-item {
            height: auto;
        }

    .services-arrow {
        margin-bottom: 3vw; 
        padding: 10vw;
        font-size: 5vw;
    }

    .arrow-list {
        margin-bottom: 2vw;
    }

        .arrow-list-item {
            font-size: 4vw;
        }

        .arrow-image {
            width: 90%;
            height: 50vw;
            background-size: cover;
        }

    .welding-quality,
    .standarts {
        float: none;
        width: auto;
    }

        .welding-quality-list-item,
        .standarts-list-item {
            font-size: 4vw;
            padding-left: 7.5vw;
            margin-bottom: 3vw;
            background-size: 5vw;
        }
}