body {
    background-color: black;
    text-align: center;
    color: yellow;
    font-family: 'Exo 2', sans-serif;
    font-size: 17px;
    letter-spacing: 2px;
    line-height: 3px;
}

.block {
    border-radius: 10px;
    width: 800px;
    margin: 0px auto;
}
.text {
    margin-bottom: 20px;
}
a {
    border: 1px solid yellow;
    color: yellow;
    font-size: 20px;
    text-decoration: none;
    padding: 10px 40px;
    border-radius: 15px;
}
a:hover {
    color: rgb(0, 0, 0);
    background-color: rgb(255, 255, 0);
    transition: 0.5s linear;
}
a:active {
    background-color: rgb(190, 190, 0);
    transition: 0.1s linear;
}

.desc {
    border: 1px solid yellow;
    border-radius: 15px;
    padding: 10px;
    margin-top: 30px;
    width: 80%;
}