body {
    padding: 0;
    margin: 0;
}

#challenge18 {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #000517;
}

#challenge18 ul {
    display: flex;
    list-style-type: none;
    padding: 40px 0;
}

#challenge18 ul li {
    font-size: 3.0rem;
    margin: 0 25px;
    color: #fff;
    position: relative;
    transition: 2.0s;
    
}
#challenge18 ul:hover li {
    filter: blur(20px);
    opacity: 0;
    transform: rotate(45deg) translateY(-140px);
}

#challenge18 ul li:first-child {
    transition-delay: 0s;
    color: #ea0000;
}
#challenge18 ul li:nth-child(2) {
    transition-delay: 0.5s;
    color: #00ea89;
}

#challenge18 ul li:nth-child(3) {
    transition-delay: 1s;
    color: #00d3ea;
}

#challenge18 ul li:nth-child(4) {
    transition-delay: 1.5s;
    color: #1934ff;
}

#challenge18 ul li:nth-child(5) {
    transition-delay: 2s;
    color: #eac300;
}

#challenge18 ul li:nth-child(6) {
    transition-delay: 2.5s;
    color: #00eae6;
}

#challenge18 ul li:nth-child(7) {
    transition-delay: 3s;
    color: #fff;
}

#challenge18 ul li:nth-child(8) {
    transition-delay: 3.5s;
    color: #a400ea;
}