*
{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: consolas;
}
.error
{
    min-height: 100vh;
    background: linear-gradient(0deg,#fff,#03a9f4);
}
.sky
{
    position: relative;
    widows: 100%;
    height: 60vh;
    display: flex;
    justify-content: center;
    align-items: center;
}
.sky h2
{
    font-size: 16em;
    color: #fff;
    text-shadow: 15px 15px 0 rgba(0, 0, 0, 0.1);
}
.sky h2 span
{
    display: inline-block;
    animation: animate 2s ease-in-out infinite;
}
.sky h2 span:nth-child(even)
{
    animation-delay: -1s;
}
@keyframes animate
{
    0%,100%
    {
        transform: translateY(-50px);
    }
    50%
    {
        transform: translateY(50px);
    }
}
.field
{
    padding: 100px;
    height: 40vh;
    background: #6e2308;
    box-shadow: inset 0 20px 10px #51680c;
    text-align: center;
}
.field h2
{
    color: #fff;
    font-size: 2em;
    margin-bottom: 20px;
}
.field a
{
    background: #fff;
    color: #000000;
    width: 160px;
    height: 50px;
    line-height: 50px;
    border-radius: 50px;
    display: inline-block;
    text-decoration: none;
    font-size: 20px;
}
.plane
{
    position: absolute;
    bottom: 200px;
    left: 100px;
    max-width: 300px;
}
.grass
{
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 20px;
    background: url(grass.png);
    background-position: bottom;
    animation: animateGrass 0.2s linear infinite;
}
@keyframes animateGrass
{
    0%
    {
        background-position: 0.0;
    }
    100%
    {
        background-position: -94px 0;
    }
}