.main-landing {
    height: 40%;

    animation-name: height-animation;
    animation-duration: 2s;
}

.main-input-form h1 {
    text-align: center;
    color: white;
    font-weight: lighter;
    font-size: 50px;

    margin-top: 50px;
}

.landing-text {
    height: 180px;
    width: 650px;
    margin-top: 40px;
    text-align: center;
    line-height: 25px;

    font-size: 18px;
    color: white;

    margin: 0 auto;
}

.landing-book-promo {
    width: 100%;
    height: 370px;
    /* Permalink - use to edit and share this gradient: http://colorzilla.com/gradient-editor/#212121+0,000000+59,353535+100 */
    background: #212121; /* Old browsers */
    background: -moz-linear-gradient(45deg, #212121 0%, #000000 59%, #353535 100%); /* FF3.6-15 */
    background: -webkit-linear-gradient(45deg, #212121 0%,#000000 59%,#353535 100%); /* Chrome10-25,Safari5.1-6 */
    background: linear-gradient(45deg, #212121 0%,#000000 59%,#353535 100%); /* W3C, IE10+, FF16+, Chrome26+, Opera12+, Safari7+ */
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#212121', endColorstr='#353535',GradientType=1 ); /* IE6-9 fallback on horizontal gradient */
}

.book-wrapper {
    height: 100%;
    width: 550px;

    margin: 0 auto;
}

.book-image, .book-features {
    float: left;
}

.book-image {
    height: calc(100% - 60px);
    width: 200px;

    margin-top: 30px;
    margin-bottom: 30px;

    background-image: url("../pictures/book.png");
    background-repeat: no-repeat;
    background-size: contain;
}

.book-features {
    height: calc(100% - 30px);
    width: 350px;

    margin-top: 30px;
}

.book_price {
    color: white;
    font-size: 24px;
    margin-top: 40px;
    margin-left: 44px;
}

.book_price button {
    padding: 8px 10px;
    font-size: 16px;
    background-color: orange;
    border: none;
    text-decoration: none;
    color: white;
    border-radius: 4px;
    cursor: pointer;

    -webkit-transition: color 0.3s; /* Safari */
    transition: color 0.3s;

    -webkit-transition: background-color 0.3s; /* Safari */
    transition: background-color 0.3s;
}

.book_price button:hover {
    background-color: white;
    color: orange;
    -webkit-transition: color 0.3s; /* Safari */
    transition: color 0.3s;

    -webkit-transition: background-color 0.3s; /* Safari */
    transition: background-color 0.3s;

    -webkit-box-shadow: 0px 0px 16px 0px rgba(255,255,255,1);
    -moz-box-shadow: 0px 0px 16px 0px rgba(255,255,255,1);
    box-shadow: 0px 0px 16px 0px rgba(255,255,255,1);
}

.book-features ul {
    color: white;
    list-style: none;
    font-size: 20px;
}

.book-features li {
    line-height: 40px;
}

.book-features ul li:before {
    content: '✓';
    font-size: 20px;
    color: greenyellow;
}

@keyframes height-animation {
    from {height: calc(100% - 20px);}
    to {height: 40%;}
}