.custom-container {
    margin-right: auto;
    margin-left: auto;
    padding-left: 15px;
    padding-right: 15px;
}

.d-none {
    display: none;
}

.h1,
h1 {
    font-size: calc(1.375rem + 1.5vw);
}

.h2,
h2 {
    font-size: calc(1.325rem + 0.9vw);
}

.h3,
h3 {
    font-size: calc(1.3rem + 0.6vw);
}

.h4,
h4 {
    font-size: calc(1.275rem + 0.3vw);
}

.h5,
h5 {
    font-size: 1.25rem;
}

.h6,
h6 {
    font-size: 1rem;
}

@media (min-width: 576px) {
    .d-sm-block {
        display: block !important;
    }
}

@media (min-width: 768px) {
    .custom-container {
        width: 750px;
    }

    .d-md-none {
        display: none !important;
    }

    .d-md-block {
        display: block !important;
    }
}

@media (min-width: 992px) {
    .custom-container {
        width: 970px;
    }

    .d-lg-block {
        display: block !important;
    }

    .d-lg-none {
        display: none !important;
    }
}

@media (min-width: 1200px) {
    .custom-container {
        width: 1170px;
    }

    .h1,
    h1 {
        font-size: 2.5rem;
    }

    .h2,
    h2 {
        font-size: 2rem;
    }

    .h3,
    h3 {
        font-size: 1.75rem;
    }

    .h4,
    h4 {
        font-size: 1.5rem;
    }
}