html, body {
    margin: 0;
    height: 100%;
    min-height: 100vh;
}

.main-screen {
    display: flex; 
    min-height: 100vh; 
    flex-direction: column;
}

.header-screen {
    width: 100%; 
    padding-bottom: 1rem;
}

.yield-screen {
    width: 100%; 
    flex: 1 1 0%; 
    padding: 1rem;
    box-sizing: border-box;
    max-width: 100%;
}

.footer-screen {
    width: 100%; 
    padding-top: 1rem;
}

.title-text {
    font-size: 28px;
    font-weight: 700;
}

.sub-title-text {
    font-size: 24px;
    font-weight: 200;
}

.plain-text {
    font-size: 18px
}

.responsive-img {
    width: 100%;
    height: auto;
    max-width: 100%;
    display: block;
    object-fit: contain;
}

.sm-separator {
    padding: 1rem;
}


.scroll-to-top {
    position: fixed;
    right: 1.5rem;
    bottom: 2rem;
    z-index: 8500;
    transition: opacity .3s ease, visibility .3s ease;

    button {
        background-color: rgba(0, 0, 0, 0.65);
        color: #fff;
        border: none;
        border-radius: 50%;
        width: 48px;
        height: 48px;
        font-size: 1.5rem;
        cursor: pointer;
        box-shadow: 0 2px 6px rgba(0,0,0,.3);
    }
}

.scroll-to-top.hidden {
  opacity: 0;
  visibility: hidden;
}