website/_src/_assets/scss/_header.scss

.header {
    background: $brand-05;
    padding-top: $spacer * 2;
    padding-bottom: $spacer;
    position: relative;
    margin-bottom: $edge-height;

    &:after {
        content: '';
        width: 100%;
        height: $edge-height;
        display: block;
        position: absolute;
        left: 0;
        bottom: -($edge-height);
        clip-path: polygon(100% 0, 0 0, 0 100%);
        background: $brand-05;
    }
}

.header__title {
    font-size: $font-size-h1;
    margin-bottom: $spacer / 2;
}

.header__subtitle {
    font-size: $font-size-h3;
    color: $brand-02;
    margin: 0;
}