.splash-title h1 {
    display: inline;
}

.all-lessons {
    width: 80%;
    margin: auto;
    margin-top: 60px;
    margin-bottom: 80px;
} 

.all-lessons button {
    padding: 0;
    margin: 10px;
    box-shadow: 0 1px 4px 0 rgba(0,0,0,0.37);
    border-radius: 3px;
    border: 1px #b5b5b5 solid;
    background-color: #ffffffa3;
}

.all-lessons button:focus {
    outline: none;
}

.all-lessons button:hover {
    box-shadow: 0 2px 6px 0 rgba(0,0,0,0.6);
    background-color: white;
    color: #0a6bf9;
}

.all-lessons button:hover .button-header {
    color: #757575;
}

.button-footer {
    border-top: 1px #b5b5b5 solid;
    font-size: 12px;
    padding: 3px 0;
    margin-top: 20px;
    background-color: white;
}

.button-header {
    text-align: left;
    padding-left: 10px;
    text-shadow: 2px 3px 6px #fff, 0 0 0 #000, 2px 3px 6px #fff;
    font-size: 34px;
    color: #757575;
}

.button-image {
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
}

.all-lessons .empty-button {
    cursor: auto;
    box-shadow: none;
    border: none;
    outline: none;
    background-color: transparent;
}

.all-lessons .empty-button:hover {
    box-shadow: none;
    background-color: transparent;
}

footer {
    position: fixed;
    bottom: 0;
    width: 100%;
    background-color: white;
    height: 70px;
    border-top: 0.5px #b5b5b5 solid;
}

.main-header a:hover {
    text-decoration: none;
}

#root header.main-header a {
    color: black;
    font-size: 20px;
    transition: 0.3s;
}

#root header.main-header img {
    width: 30px;
    height: 30px;
    margin-right: 10px;
    margin-top: -1px;
}

#root header.main-header {
    position: fixed;
    top: 0;
    display: flex;
    width: 100%;
    justify-content: flex-start;
    align-items: center;
}

.logo-button:focus {
    outline: none;
}
.logo-button {
    color: black;
    font-size: 18px;
}

.splash {
    background-color: #084f8e;
    background-image: url(../images/star-bg.png), linear-gradient(0deg, #084f8e, #083466 80%);
    height: 100vh;
}

.splash-header {
    color: white;
    font-weight: bold;
    font-size: 24px;
    padding: 10px 30px;
}

.moon {
    border-radius: 100%;
    position: absolute;
    top: 30%;
    left: 12%;
    box-shadow: 0 0 80px rgba(255, 255, 255, .6);
    width: 200px;
    transition: 1s linear all;
    animation: rotateMoon 500s infinite;
}

@keyframes rotateMoon {
    0% { transform: rotateZ(0deg) }
    100% { transform: rotateZ(360deg) };
}

.splash-title {
    position: absolute;
    z-index: 100;
    top: 30%;
    right: 20%;
    width: 550px;
}

.splash-title h1 {
    margin-top: 20px;
    color: white;
}

.splash-title p {
    color: #458dd8;
}

.splash-title button:hover {
    box-shadow: 0 0 10px #fff;
}

.splash-title button {
    background-color: white;
    color: #084f8e;
    padding: 7px 35px;
    border-radius: 5px;
    transition: 0.5s;
}

.splash-title span {
    display: inline;
    border-left: 2px white solid;
    content: '';
    margin-left: 5px;
    color: #08396e;
    animation: animateCursor 1.25s step-end infinite;
    font-size: 2.5rem;
}

@keyframes animateCursor {
    from, to { opacity: 0;}
    50% { opacity: 1; }
}

canvas {
    position: absolute;
    top: 0;
    height: 100vh;
    width: 100vw;
}

.splash-header button {
    color: white;
    position: relative;
    z-index: 1;
    outline: none;
    font-weight: bold;
}