header {
    text-align: center;
}
nav ul {
    list-style: none;
}
main {
    display: flex;
    flex-direction: column;
}
main div {
    width: 50vw;
    margin: auto;
    margin-top: 25px;
    margin-bottom: 25px;
    border: 1px solid gray;
    border-radius: 20px;
    padding: 30px;
}
#rainbow-project button {
    background-color: pink;
    border-radius: 5px;
    border: none;
    padding: 15px;
}
#rainbow-project button:hover {
    background-color: #c06778;
    cursor: pointer;
}
#emoji-list {
    font-size: 30px;
    list-style: none;
    display: flex;
    flex-wrap: wrap;
}
#apply-filter, #normalize {
    background-color: pink;
    border: none;
    border-radius: 5px;
    padding: 5px;
}
#apply-filter:hover, #normalize:hover {
    background-color: #c06778;
    cursor: pointer;
}