#btn-btt {
    display: inline-block;
    background-color: #0779E4;
    width: 40px;
    height: 40px;
    text-align: center;
    border-radius: 4px;
    position: fixed;
    bottom: 30px;
    right: 30px;
    transition: background-color .3s, opacity .5s, visibility .5s;
    opacity: 0;
    visibility: hidden;
    z-index: 1000;
}

    #btn-btt::after {
        content: "\f077";
        font-family: FontAwesome;
        font-weight: normal;
        font-style: normal;
        font-size: 1.5em;
        line-height: 38px;
        color: #fff;
    }

    #btn-btt:hover {
        cursor: pointer;
        background-color: #0665bf;
    }

    #btn-btt:active {
        background-color: #0665bf;
    }

    #btn-btt.show {
        opacity: 1;
        visibility: visible;
    }

/* Styles for the content section */

.content {
    width: 77%;
    margin: 50px auto;
    font-family: 'Merriweather', serif;
    font-size: 17px;
    color: #6c767a;
    line-height: 1.9;
}

@media (min-width: 500px) {
    .content {
        width: 43%;
    }

    #btn-btt {
        margin: 30px;
    }
}

.content h1 {
    margin-bottom: -10px;
    color: #03a9f4;
    line-height: 1.5;
}

.content h3 {
    font-style: italic;
    color: #96a2a7;
}