#main {
    background-size: cover;
}

.big-demo-blocks {
    float: right;
    margin-right: 2%;
    margin-top: 80px;
    width: 45%;
}

.big-demo-blocks .big-demo-block {
    display: block;
    margin-bottom: 40px;
    position: relative;
}

.big-demo-blocks .big-demo-block .bottom-text {
    position: absolute;
    bottom: 0;
    right: 0;
    left: 0;
    background-color: rgba(39, 174, 96, .9);
    transition: all 0.3s ease;
    padding: 12px 5%;
}

.big-demo-blocks .big-demo-block:hover .bottom-text {
    background-color: rgba(39, 174, 96, 1);
}

.big-demo-blocks .big-demo-block .bottom-text h3 {
    margin: 0 0 5px;
    line-height: 25px;
    font-size: 1.4em;
}

.big-demo-blocks .big-demo-block .bottom-text h4 {
    margin: 5px 0 0;
    font-size: 0.9em;
}

.big-demo-blocks .big-demo-block .bottom-text h3, .big-demo-blocks .big-demo-block .bottom-text h4 {
    color: #fff;
    text-align: center;
}

.big-demo-blocks .big-demo-block .bottom-text h3 + h4 {
    border-top: 1px solid #fff;
    padding-top: 3px;
}

@media only screen and (max-width: 875px) and (min-width: 621px) {
    .big-demo-blocks .big-demo-block .bottom-text {
        font-size: 0.7em;
        padding: 6px 5%;
    }
}

@media only screen and (max-width: 620px) {
    #main.site-main {
        background-size: 200% auto;
        padding-top: 300px;
    }

    .big-demo-blocks {
        float: none;
        width: 100%;
    }

    .big-demo-blocks {
        padding: 0 5%;
    }
}