.bg-1 {
    background: url(../images/about/bg-1.png) no-repeat;
    background-size: cover;
}

.bg-2 {
    background: url(../images/about/bg-2.png) no-repeat;
    background-size: cover;
}

.bg-3 {
    background: url(../images/about/bg-3.png) no-repeat;
    background-size: cover;
}

@media (min-width: 576px) {
    .container {
        max-width: 540px;
    }
}

@media (min-width: 768px) {
    .container {
        max-width: 720px;
    }
}

@media (min-width: 992px) {
    .container {
        max-width: 960px;
    }
}

@media (min-width: 1200px) {
    .container {
        max-width: 1140px;
    }
}

@media (min-width: 1460px) {
    .container {
        max-width: 1400px;
    }
}

.case .case-content {
    display: none;
}

.case.show .case-content {
    display: flex;
    cursor: pointer;
}