.sec-block {
    position: relative;
    z-index: 2;
}
.block-text h1,
.block-text h2{
    font-size: 4rem;
    line-height: 4.5rem;
    margin: 0 0 2.4rem;
}
.block-text h1:last-child,
.block-text h2:last-child{
    margin-bottom: 0;
}
.block-text h3,
.block-text h4{
    font-size: 3rem;
    line-height: 3.7rem;
    letter-spacing: 0.3px;
    margin: 0 0 2.4rem;
}
.block-text h3:last-child,
.block-text h4:last-child{
    margin-bottom: 0;
}
@media(min-width:1360px) and (max-width:1459.98px){
    .block-text h1, .block-text h2 {
        font-size: 3.7rem;
        line-height: 4.2rem;
    }
    .block-text h3, .block-text h4 {
        font-size: 2.8rem;
        line-height: 3.6rem;
        letter-spacing: 0.3px;
    }
}
@media(min-width:1200px) and (max-width:1359.98px){
    .block-text h1, .block-text h2 {
        font-size: 3.7rem;
        line-height: 4.2rem;
    }
    .block-text h3, .block-text h4 {
        font-size: 2.7rem;
        line-height: 3.4rem;
    }
}
@media(min-width:992px) and (max-width:1199.98px){
    .block-text h1, .block-text h2 {
        font-size: 3.5rem;
        line-height: 4rem;
        margin: 0 0 2rem;
    }
    .block-text h3, .block-text h4 {
        font-size: 2.4rem;
        line-height: 3.1rem;
        margin: 0 0 2em;
    }
}
@media(min-width:768px) and (max-width:991.98px){
    .block-text h1, .block-text h2 {
        font-size: 3rem;
        line-height: 3.5rem;
        margin: 0 0 2rem;
    }
    .block-text h3, .block-text h4 {
        font-size: 2.2rem;
        line-height: 2.9rem;
        letter-spacing: 0.2px;
        margin: 0 0 2rem;
    }
}
@media(max-width:767.98px){
    .block-text h1, .block-text h2 {
        font-size: 2.6rem;
        line-height: 3.1rem;
        margin: 0 0 2rem;
    }
    .block-text h3, .block-text h4 {
        font-size: 2rem;
        line-height: 2.7rem;
        letter-spacing: 0.1px;
        margin: 0 0 2rem;
    }
}